Manifold main body for equipment and equipment

Abstract

An apparatus for connecting fluid-based heat transfer apparatuses includes a manifold body having a first three-way valve body and a second three-way valve body, each three-way valve body being connected to an inlet, an outlet, and a cross conduit, respectively. The primary chamber and the secondary chamber extend between the inlet and the outlet. A bi-directional balance valve body or a pressure independent control valve body is connected to the second inlet and the second outlet and accommodates a balance valve or a pressure independent control valve. A drain port orifice passes through the outer wall of the manifold body between the inlet and the outlet. The manifold body is integrally formed such that the primary cavity and the secondary cavity maintain a spaced relationship. The cross conduit includes a direct fluid path from the first three-way valve body to the second three-way valve body.

Description

Technical Field

[0001] The present disclosure generally relates to a heat transfer system, and more particularly, may relate to a heat transfer system including a plurality of heat transfer devices that can be used to provide heat to a space or remove heat from a space by transferring heat to or from an atmosphere in the space by heating or cooling a liquid or other fluid. Background Art

[0002] Heat transfer systems typically include two or more heat transfer devices that are served by a common heat transfer fluid in the form of a heated or cooled fluid (most commonly, by a heating or cooling fluid source comprising liquid water). Such heat transfer systems can be balanced to regulate the flow rate of the heat transfer fluid provided to each heat conversion device in the system. The balancing process is known as hydronic balancing and employs one or more balancing valves to adjust the relative flow resistances between the different heat transfer devices in the system, thereby regulating the relative flow rates of the heat transfer fluid through the different heat transfer devices in the system.

[0003] In addition to the balancing valve, other valves may be provided, and other valves may be provided to facilitate draining or flushing of portions of the heat transfer system for maintenance, repair, etc. In addition, in order to monitor the balancing process, and to facilitate various functions in the operation of such heat transfer equipment, one or more ports may be provided for entering the heat transfer fluid within the system or its fluid path. These ports are sometimes referred to as pressure temperature ports or "PT ports" because one or more pressure or temperature probes are typically inserted into the ports to measure the pressure or temperature of the heat transfer fluid during balancing or other maintenance of the heat transfer equipment. The ports also have other uses, including for exhausting air from the system.

[0004] Balancing valves, other valves and ports are typically installed near the heat transfer equipment, near connecting hoses or pipes leading from the heat transfer fluid source to the heat transfer equipment, or near the return of the heat transfer manifold body fluid. The return can be a reservoir, a piping system, a pipe loop connected to a system for heating and / or cooling the heat transfer fluid, or other downstream configuration capable of receiving a fluid flow.

[0005] When installing a heat transfer device or components thereof in a building or other facility, the heat transfer device is connected at an inlet to an upstream fluid conduit connected to a heat transfer fluid source and at an outlet to a downstream fluid conduit connected to a return.

[0006] The present disclosure relates to devices and systems for connecting a downstream fluid outlet and an upstream fluid source (in conjunction with a balancing valve) in fluid communication with a fluid-based heat transfer device. Summary of the invention

[0007] An example of a manifold according to the present disclosure includes a manifold body for an apparatus for connecting a downstream fluid outlet and an upstream fluid source that are fluidly connected to a fluid-based heat transfer apparatus. The manifold body includes: a first three-way valve body that is fluidly connected to a first inlet of the manifold body, a first outlet of the manifold body, and a cross-conduit of the manifold body; a primary cavity between the first inlet of the manifold body and the first outlet of the manifold body; a second three-way valve body that is fluidly connected to a second inlet of the manifold body, a second outlet of the manifold body, and a cross-conduit of the manifold body; a two-way balancing valve body that is fluidly connected to a second inlet and a second outlet; a secondary cavity between the second inlet of the manifold body and the second outlet of the manifold body. The manifold body is integrally formed so that the primary cavity and the secondary cavity are maintained in a spaced relationship; the cross-conduit of the manifold body includes a direct fluid path from the first three-way valve body to the second three-way valve body.

[0008] Any of the embodiments may include a manifold body further comprising: a drain port aperture through an outer wall of the manifold body between the first inlet of the manifold body and the first outlet of the manifold body, the drain port aperture being in direct fluid communication with the primary chamber.

[0009] Any embodiments may include a manifold body further comprising: a primary cavity pressure temperature port orifice extending through an outer wall of the manifold body between a first inlet of the manifold body and a first outlet of the manifold body, the primary cavity pressure temperature port orifice being in direct fluid communication with the primary cavity.

[0010] Any embodiments may include a manifold body further comprising: a secondary cavity pressure temperature port orifice through an outer wall of the manifold body between the second inlet of the manifold body and the second outlet of the manifold body, the secondary cavity pressure temperature port orifice in direct fluid communication with the primary cavity.

[0011] Any embodiments may include a manifold body further comprising: a first secondary chamber pressure temperature port orifice passing through an outer wall of the manifold body between a second inlet of the manifold body and a second outlet of the manifold body, the first secondary chamber pressure temperature port orifice being in direct fluid communication with the primary chamber; and a second secondary chamber pressure temperature port orifice passing through an outer wall of the manifold body between the second inlet of the manifold body and a second outlet of the manifold body, the second secondary chamber pressure temperature port orifice being in direct fluid communication with the primary chamber.

[0012] Any of the embodiments may include a manifold body wherein the first secondary chamber pressure temperature port orifice and the second secondary chamber pressure temperature port orifice are spaced apart along a path from the second inlet to the second outlet.

[0013] Any of the embodiments may include a manifold body further comprising a bracket extending between the first three-way valve body and the second three-way valve body and configured to maintain the first three-way valve body and the second three-way valve body in a spaced relationship.

[0014] Any embodiment may include a manifold body wherein the bracket has mounting means 382 for attaching the manifold body to a structural element.

[0015] Any embodiment may include a manifold body further comprising: a first valve stem aperture through an outer wall of the first three-way valve body, a second valve stem aperture through an outer wall of the second three-way valve body, and a third valve stem aperture through an outer wall of the two-way balancing valve body.

[0016] According to one example of the apparatus of the present disclosure, which is used to connect a downstream fluid outlet and an upstream fluid source in fluid communication with a fluid-based heat transfer apparatus, the apparatus may include: a manifold body, which includes: a first three-way valve body in fluid communication with a first inlet of the manifold body, a first outlet of the manifold body, and a cross-conduit of the manifold body; a primary cavity between the first inlet of the manifold body and the first outlet of the manifold body; a second three-way valve body in fluid communication with a second inlet of the manifold body, a second outlet of the manifold body, and a cross-conduit of the manifold body; a two-way balancing valve body in fluid communication with the second inlet and the second outlet; a secondary cavity between the second inlet of the manifold body and the second outlet of the manifold body; and a drain port orifice that passes through an outer wall of the manifold body between the first inlet of the manifold body and the first outlet of the manifold body, the drain port orifice being in direct fluid communication with the primary cavity. The manifold body is integrally formed so that the primary cavity and the secondary cavity are maintained in a spaced relationship; the cross-conduit of the manifold body includes a direct fluid path from the first three-way valve body to the second three-way valve body. The device includes: a first valve, which is arranged in a first three-way valve body and has at least a first passage, a second passage and a third passage; a second valve, which is arranged in a second three-way valve body and has at least a first passage, a second passage and a third passage; a third valve, which is arranged in a two-way balancing valve body, the third valve is manually actuated and has at least a first passage and a second passage; a first valve body fitting, which is engaged with the first three-way valve body; a first outlet fitting, which is configured to be sealed and connected to the first outlet; a second inlet fitting, which is engaged with the second inlet; a second outlet fitting, which is engaged with the second outlet; and a drain assembly, which is arranged in a drain port orifice.

[0017] Any embodiments of the apparatus may include: a primary chamber pressure temperature port orifice extending through an outer wall of the manifold body between a first inlet and a first outlet of the manifold body, the primary chamber pressure temperature port orifice being in direct fluid communication with the primary chamber; and a primary chamber pressure temperature port sealingly engaged with the primary chamber pressure temperature port orifice.

[0018] Any embodiments of the apparatus may include: a secondary chamber pressure temperature port orifice extending through an outer wall of the manifold body between a second inlet of the manifold body and a second outlet of the manifold body, the secondary chamber pressure temperature port orifice being in direct fluid communication with the secondary chamber; and a secondary chamber pressure temperature port sealingly engaged with the secondary chamber pressure temperature port orifice.

[0019] Any embodiments of the apparatus may include: a first secondary chamber pressure-temperature port orifice extending through an outer wall of the manifold body between a second inlet and a second outlet of the manifold body, the first secondary chamber pressure-temperature port orifice being in direct fluid communication with the primary chamber; a primary chamber pressure-temperature port sealingly engaged with the primary chamber pressure-temperature port orifice; a second secondary chamber pressure-temperature port orifice extending through an outer wall of the manifold body between the second inlet and a second outlet of the manifold body, the second secondary chamber pressure-temperature port orifice being in direct fluid communication with the primary chamber; and a secondary chamber pressure-temperature port sealingly engaged with the first secondary chamber pressure-temperature port orifice.

[0020] Any of the embodiments of the apparatus may include a first secondary chamber pressure temperature port orifice and a second secondary chamber pressure temperature port orifice spaced apart along a path from the second inlet to the second outlet.

[0021] Any of the embodiments of the apparatus may include a bracket extending between the first three-way valve body and the second three-way valve body and configured to maintain the first three-way valve body and the second three-way valve body in a spaced relationship.

[0022] Any of the embodiments of the apparatus may include a bracket having mounting means for attaching the manifold body to a structural element.

[0023] Any embodiments of the apparatus may include a first valve stem aperture through an outer wall of a first three-way valve body, a second valve stem aperture through an outer wall of a second three-way valve body, and a third valve stem aperture through an outer wall of a two-way balanced valve body.

[0024] Any embodiments of the apparatus may include a first valve body fitting including a fixed threaded fitting and a second outlet fitting including a fixed threaded fitting.

[0025] Any embodiments of the apparatus may include: a first valve body fitting including a locked union nut; and a second outlet fitting including a locked union nut.

[0026] On the other hand, an example of a manifold according to the present disclosure includes a manifold body for an apparatus for connecting a downstream fluid outlet and an upstream fluid source in fluid communication with a fluid-based heat transfer apparatus, the manifold body comprising: a first three-way valve body in fluid communication with a first inlet of the manifold body, a first outlet of the manifold body, and a cross-conduit of the manifold body; a primary cavity between the first inlet of the manifold body and the first outlet of the manifold body; a second three-way valve body in fluid communication with a second inlet of the manifold body, a second outlet of the manifold body, and a cross-conduit of the manifold body; a pressure-independent control valve body in fluid communication with the second inlet and the second outlet; a secondary cavity between the first inlet of the manifold body and the first outlet of the manifold body. The manifold body is integrally formed so that the primary cavity and the secondary cavity are maintained in a spaced relationship; the cross-conduit of the manifold body includes a direct fluid path from the first three-way valve body to the second three-way valve body.

[0027] Any of the embodiments may include a drain port aperture through the outer wall of the manifold body between the first inlet and the first outlet of the manifold body, the drain port aperture being in direct fluid communication with the primary chamber.

[0028] Any of the embodiments may include a primary cavity pressure temperature port orifice through the outer wall of the manifold body between the first inlet of the manifold body and the first outlet of the manifold body, the primary cavity pressure temperature port orifice being in direct fluid communication with the primary cavity.

[0029] Any of the embodiments may include a secondary cavity pressure temperature port orifice through the outer wall of the manifold body between the second inlet of the manifold body and the second outlet of the manifold body, the secondary cavity pressure temperature port orifice in direct fluid communication with the primary cavity.

[0030] Any embodiments may include: a first secondary chamber pressure temperature port orifice that passes through the outer wall of the manifold body between the second inlet of the manifold body and the second outlet of the manifold body, wherein the first secondary chamber pressure temperature port orifice is in direct fluid communication with the primary chamber; and a second secondary chamber pressure temperature port orifice that passes through the outer wall of the manifold body between the second inlet of the manifold body and the second outlet of the manifold body, wherein the second secondary chamber pressure temperature port orifice is in direct fluid communication with the primary chamber.

[0031] Any of the embodiments may include a first secondary chamber pressure temperature port orifice and a second secondary chamber pressure temperature port orifice spaced apart along a path from the second inlet to the second outlet.

[0032] Any of the embodiments may include a bracket extending between the first three-way valve body and the second three-way valve body and configured to maintain the first three-way valve body and the second three-way valve body in a spaced relationship.

[0033] Any of the embodiments may include a bracket having mounting means for attaching the manifold body to a structural element.

[0034] Any embodiments may include a first valve stem aperture through an outer wall of a first three-way valve body, a second valve stem aperture through an outer wall of a second three-way valve body, and a third valve stem aperture through an outer wall of a pressure independent control valve body.

[0035] On the other hand, according to an example of a device according to the present disclosure, the device is used to connect a downstream fluid outlet and an upstream fluid source that are fluidly connected to a fluid-based heat transfer device, and the device may include: a manifold body, which includes: a first three-way valve body, which is fluidly connected to the first inlet of the manifold body, the first outlet of the manifold body and the cross-conduit of the manifold body; a primary chamber between the first inlet of the manifold body and the first outlet of the manifold body; a second three-way valve body, which is fluidly connected to the second inlet of the manifold body, the second outlet of the manifold body and the cross-conduit of the manifold body; a pressure-independent control valve body, which is fluidly connected to the second inlet and the second outlet; a secondary chamber between the first inlet of the manifold body and the first outlet of the manifold body; and a drain port orifice, which passes through the outer wall of the manifold body between the first inlet of the manifold body and the first outlet of the manifold body, and the drain port orifice is directly fluidly connected to the primary chamber. The manifold body is integrally formed so that the primary chamber and the secondary chamber are maintained in a spaced relationship; the cross-conduit of the manifold body includes a direct fluid path from a first three-way valve body to a second three-way valve body; a first valve, which is arranged in the first three-way valve body and has at least a first passage, a second passage and a third passage; a second valve, which is arranged in the second three-way valve body and has at least a first passage, a second passage and a third passage; a third valve, which is arranged in a pressure-independent control valve body, is manually actuated, and has at least a first passage and a second passage; a first valve body fitting, which is engaged with the first three-way valve body; a first outlet fitting, which is engaged with the first outlet; a second inlet fitting, which is engaged with the second inlet; a second outlet fitting, which is engaged with the second outlet; and a drain assembly, which is arranged in a drain port orifice.

[0036] Any of the embodiments of the apparatus may include a venturi or other device to assist in flow measurement.

[0037] Any of the embodiments of the device may include a removable plug for plugging the aperture to facilitate access to internal components of the device.

[0038] Any embodiments of the apparatus may include: a primary chamber pressure temperature port orifice extending through an outer wall of the manifold body between a first inlet and a first outlet of the manifold body, the primary chamber pressure temperature port orifice being in direct fluid communication with the primary chamber; and a primary chamber pressure temperature port sealingly engaged with the primary chamber pressure temperature port orifice.

[0039] Any embodiments of the apparatus may include: a secondary chamber pressure temperature port orifice extending through an outer wall of the manifold body between a second inlet of the manifold body and a second outlet of the manifold body, the secondary chamber pressure temperature port orifice being in direct fluid communication with the primary chamber; and a secondary chamber pressure temperature port sealingly engaged with the secondary chamber pressure temperature port orifice.

[0040] Any embodiments of the apparatus may include: a first secondary chamber pressure-temperature port orifice extending through an outer wall of the manifold body between a second inlet and a second outlet of the manifold body, the first secondary chamber pressure-temperature port orifice being in direct fluid communication with the primary chamber; a primary chamber pressure-temperature port sealingly engaged with the primary chamber pressure-temperature port orifice; a second secondary chamber pressure-temperature port orifice extending through an outer wall of the manifold body between a second inlet of the manifold body and a second outlet of the manifold body, the second secondary chamber pressure-temperature port orifice being in direct fluid communication with the primary chamber; and a secondary chamber pressure-temperature port sealingly engaged with the first secondary chamber pressure-temperature port orifice.

[0041] Any of the embodiments of the apparatus may include a first secondary chamber pressure temperature port orifice and a second secondary chamber pressure temperature port orifice spaced apart along a path from the second inlet to the second outlet.

[0042] Any of the embodiments of the apparatus may include a bracket extending between the first three-way valve body and the second three-way valve body and configured to maintain the first three-way valve body and the second three-way valve body in a spaced relationship.

[0043] Any of the embodiments of the apparatus may include a bracket having mounting means for attaching the manifold body to a structural element.

[0044] Any embodiments of the apparatus may include a first valve stem aperture through an outer wall of the first three-way valve body, a second valve stem aperture through an outer wall of the second three-way valve body, and a third valve stem aperture through an outer wall of the pressure independent control valve body.

[0045] Any embodiments of the apparatus may include a first valve body fitting including a fixed threaded fitting and a second outlet fitting including a fixed threaded fitting.

[0046] Any embodiments of the apparatus may include: a first valve body fitting including a locked union nut; and a second outlet fitting including a locked union nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The following description of the present disclosure will be better understood when read in conjunction with the accompanying drawings. However, the present disclosure is not limited to the precise arrangements and means shown. In the accompanying drawings:

[0048] Figure 1 is a schematic perspective view of a manifold of the present disclosure;

[0049] Figure 2 for Figure 1 A front plan view of the manifold;

[0050] Figure 3 for Figure 1 A schematic cross-sectional view of a manifold taken along line 3-3;

[0051] Figure 4 is a schematic perspective view of the device of the present disclosure;

[0052] Figure 5 for Figure 4 A schematic cross-sectional view of the device taken along line 5-5;

[0053] Figure 6 a schematic perspective view of a second device of the present disclosure;

[0054] Figure 7 is a schematic perspective view of a second manifold of the present disclosure;

[0055] Figure 8 for Figure 7 A front plan view of the manifold;

[0056] Fig. 9 for Figure 7 A schematic cross-sectional view of a manifold taken along line 9-9;

[0057] Fig.10 is a schematic perspective view of a third device of the present disclosure;

[0058] Fig.11 for Fig.10 A schematic cross-sectional view of the device taken along line 11-11; and

[0059] Fig.12 is a schematic perspective view of a fourth device of the present disclosure. DETAILED DESCRIPTION

[0060] Certain terms used in the following description are for convenience only and are not limiting terms. The terms "right", "left", "bottom" and "top" indicate the directions indicated in the accompanying drawings. The terms "inside" and "outside" refer to the directions toward and away from the geometric center of an object and its designated parts, respectively. Unless otherwise specifically set forth herein, the term "the" is not limited to one element when the number is not limited, but should be understood to mean "at least one". For clarity or readability, "at least one" may sometimes be used, but such use does not change the interpretation of the term "the" when the number is limited. In addition, the singular includes the plural, and vice versa, unless the context clearly indicates otherwise. "Including" as used herein means "including but not limited to". The term "or" is inclusive, so "A or B" includes A and B, only A and only B. The terms "approximately", "approximately", "generally", "substantially" and similar terms used herein, when referring to the size or characteristics of a component, indicate that the described size / characteristic is not a strict boundary or parameter, and does not exclude minor changes in similar functions. At a minimum, such references including numerical parameters will include variations that do not alter their least significant digits using mathematical and industrial principles accepted in the art (e.g., rounding, measurement or other systematic errors, manufacturing tolerances, etc.). As discussed in more detail below, references to "upstream" and "downstream" refer to the position of an upstream fluid conduit or a downstream fluid conduit relative to a given element. A "two-way valve body" or "two-way valve" includes a valve having two or more passages. A "three-way valve body" or "three-way valve" includes a valve having three or more passages. The terms set forth in this paragraph include the above-mentioned words, their derivatives, and words of similar meaning.

[0061] Please refer to the attached drawings for details. Figures 1 to 3 is a diagram of an example of a manifold according to the present disclosure that may include a manifold for use with devices 1000, 1002 ( Figures 4 to 6 ) is used to connect a downstream fluid outlet and an upstream fluid source that are fluidly connected to a fluid-based heat transfer device. The manifold body 100 includes a first three-way valve body 120 that is fluidly connected to a first inlet 140 of the manifold body 100, a first outlet 160 of the manifold body 100, and a cross-conduit 180 of the manifold body 100. The primary chamber 102 extends between the first inlet 140 of the manifold body 100 and the first outlet 160 of the manifold body 100. The second three-way valve body 220 is fluidly connected to the second inlet 240 of the manifold body 100, the second outlet 260 of the manifold body 100, and the cross-conduit 180 of the manifold body 100, and the two-way balancing valve body 280 is fluidly connected to the second inlet 240 and the second outlet 260. The secondary chamber 202 extends between the second inlet 240 of the manifold body 100 and the second outlet 260 of the manifold body 100.

[0062] The manifold body 100 is integrally formed and maintains the primary chamber 102 and the secondary chamber 202 in a spaced relationship. The manifold body 100 can be formed as a single piece by casting, machining, 3D printing or other suitable processes, or multiple elements formed by such processes are fused into a single piece by welding, brazing, adhesives or other suitable processes. The manifold body 100 has sufficient strength and rigidity to maintain the primary chamber 102 and the secondary chamber 202 in a spaced relationship, so that the primary chamber 102 and the connected elements form a lower path for the inlet side of the heat transfer device, while the secondary chamber 202 and the connected elements form an upper path for the outlet side of the heat transfer device, with the cross conduit 180 extending therebetween. The cross conduit 180 of the manifold body 100 includes a direct fluid path 182 extending from the first three-way valve body 120 to the second three-way valve body 220, which can be formed by a tubular channel, for example, as shown in the figure. A plug aperture 114 may also be provided in the manifold body 100 , and the plug 112 may be configured to sealingly fit within the plug aperture 114 .

[0063] The manifold body 100 may also include a drain port aperture 302 through the outer wall 104 of the manifold body 100 between the first inlet 140 of the manifold body 100 and the first outlet 160 of the manifold body 100 , the drain port aperture 302 being in direct fluid communication with the secondary cavity 102 .

[0064] The manifold body 100 may further include a primary cavity pressure temperature port aperture 322 through the outer wall 104 of the manifold body 100 between the first inlet 140 of the manifold body 100 and the first outlet 160 of the manifold body 100 , the primary cavity pressure temperature port aperture 322 being in direct fluid communication with the primary cavity 102 .

[0065] The manifold body 100 may also include a secondary cavity pressure temperature port orifice 342 through the outer wall of the manifold body 100 between the second inlet 240 of the manifold body 100 and the second outlet 260 of the manifold body 100 , the secondary cavity pressure temperature port orifice 342 being in direct fluid communication with the secondary cavity 202 .

[0066] The manifold body 100 may also include: a first secondary chamber pressure temperature port orifice 342 passing through the outer wall of the manifold body 100 between the second inlet 240 of the manifold body 100 and the second outlet 260 of the manifold body 100, the first secondary chamber pressure temperature port orifice 342 being directly fluidically connected to the secondary chamber 202; and a second secondary chamber pressure temperature port orifice 362 passing through the outer wall of the manifold body 100 between the second inlet 240 of the manifold body 100 and the second outlet 260 of the manifold body 100, the second secondary chamber pressure temperature port orifice 362 being directly fluidically connected to the secondary chamber 202.

[0067] Manifold body 100 may also include first and second secondary chamber pressure temperature port orifices 342 and 362 spaced apart along a path from second inlet 240 to second outlet 260. This arrangement may facilitate measuring pressure to determine flow from second inlet 240 to second outlet 260.

[0068] The manifold body 100 may also include a bracket 380 extending between the first three-way valve body 120 and the second three-way valve body 220 and configured to hold the first three-way valve body 120 and the second three-way valve body 220 in a spaced relationship. The bracket 380 may contribute to the strength and rigidity of the manifold body 100 to support and hold the primary chamber 102 and the secondary chamber 202 in a spaced relationship as described above. The bracket 380 may have a mounting device 382, ​​which may be a mounting hole, ring, or other device for attaching the manifold body 100 to a structural element by, for example, providing a structural element for engaging a building, a support frame, or other structure.

[0069] The manifold body 100 may further include a first stem aperture 106 through the outer wall 104 of the first three-way valve body 120 , a second stem aperture 206 through the outer wall 104 of the second three-way valve body 220 , and a third stem aperture 308 through the outer wall 104 of the bidirectional balancing valve body 280 .

[0070] Reference Figures 4 to 6 , an example of an apparatus 1000, 1002 for connecting a downstream fluid outlet and an upstream fluid source in fluid communication with a fluid-based heat transfer apparatus according to the present disclosure may include a manifold body 100 as described above. The apparatus 1000 ( Figure 4 and Figure 5 ) and the device 1002 may differ only in the fittings provided at the first inlet 140 and the second outlet 260. Various elements including valves and ports may be engaged with the manifold body 100 and housed within or adjacent to the manifold body 100 to form the devices 1000, 1002. The first valve 400 is provided in the first three-way valve body 120 and has at least a first passage 402, a second passage 404 and a third passage 406; the second valve 500 is provided in the second three-way valve body 220 and has at least a first passage 502, a second passage 504 and a third passage 506. The first valve 400 can be actuated by rotating the rod 408 using the handle 410. The second valve 500 can be actuated by rotating the rod 508 using the handle 510. The third valve 600 can be a balancing valve and can be provided in the two-way balancing valve body 280. In Figures 4 to 6 In the illustrated embodiment, the third valve 600 is configured to be manually actuated via a rod 606 and a handle 608. The third valve 600 is a two-way valve and has at least a first passage 602 and a second passage 604. The first valve body fitting may be of the type shown in FIG. Figure 6The first valve body fitting 122 shown in the figure, or Figure 4 140. The drain assembly 300 may include a drain cover 304 that is removable and seals the drain port aperture 302. The drain port aperture 302 may include a filter holder 303 that includes a cylindrical wall extending through the primary cavity 102 and having a hole 305 to allow fluid to flow between the primary cavity 102 and the first outlet 160. The drain assembly 300 may include a drain cover 304 that is removable and seals the drain port aperture 302. The drain assembly 300 may include a filter 310, as shown, which includes a perforated or mesh cylindrical body configured to fit in a filter holder 303 and allow fluid to flow therethrough while locking debris contained in the fluid flow. The drain assembly also includes a drain valve 312 operated by a handle 314 for controlling flow from the primary chamber 102 through the drain port orifice 302.

[0071] The first valve 400, the second valve 500, the drain valve 312, and the third valve 600 may be used to direct flow in a variety of ways during use, as described below.

[0072] The apparatus 1000, 1002 may also include a primary chamber pressure temperature port aperture 322 through the outer wall 104 of the manifold body 100 between the first inlet 140 of the manifold body 100 and the first outlet 160 of the manifold body 100, the primary chamber pressure temperature port aperture 322 being in direct fluid communication with the primary chamber 102. The primary chamber pressure temperature port 320 may be sealingly engaged with the primary chamber pressure temperature port aperture 322 and may be provided with a cover 324 that may sealingly engage the primary chamber pressure temperature port 320.

[0073] The apparatus 1000, 1002 may also include a primary cavity pressure temperature port 320 sealingly engaged with the primary cavity pressure temperature port orifice 322. The primary cavity pressure temperature port 320 may be provided with a cap 324 sealingly engaged with the primary cavity pressure temperature port 320. A first secondary cavity pressure temperature port orifice 342 may pass through the outer wall of the manifold body 100 between the second inlet 240 of the manifold body 100 and the second outlet 260 of the manifold body 100. The first secondary cavity pressure temperature port orifice 342 may be in direct fluid communication with the secondary cavity 202. The second secondary cavity pressure temperature port orifice 362 may be in direct fluid communication with the secondary cavity 202. The second secondary cavity pressure temperature port orifice 362 may pass through the outer wall 104 of the manifold body 100 between the second inlet 240 of the manifold body 100 and the second outlet 260 of the manifold body 100. The second secondary chamber pressure temperature port orifice 362 may be in direct fluid communication with the secondary chamber 202, and the secondary chamber pressure temperature port 340 may be sealingly engaged with the first secondary chamber pressure temperature port orifice 342 and may be provided with a cover 344 that is sealingly engaged with the secondary chamber pressure temperature port orifice 342. The second secondary chamber pressure temperature port 340 may be sealingly engaged with the second secondary chamber pressure temperature port orifice 362 and may be provided with a cover 344 that is sealingly engaged with the secondary chamber pressure temperature port 340.

[0074] The apparatus 1000, 1002 may also include a first secondary chamber pressure temperature port orifice 342 and a second secondary chamber pressure temperature port orifice 362 spaced apart along a path from the second inlet 240 to the second outlet 260. This arrangement allows for the measurement of the pressure of the fluid moving from the second inlet 240 to the second outlet 260. The presence of a flow restriction or venturi 110 ( Figure 5 ), wherein the first secondary chamber pressure temperature port orifice 342 and the second secondary chamber pressure temperature port orifice 362 are located upstream and downstream, thereby allowing pressure measurement before, adjacent to or after the venturi tube to allow calculation (or lookup) of the corresponding flow rate from the second inlet 240 to the second outlet 260.

[0075] The apparatus 1000, 1002 may also include a manifold body 100 having a bracket 380 as described above. As described above, the bracket 380 may have a mounting device 382 for attaching the manifold body 100 to a structural element.

[0076] The devices 1000, 1002 may also include a manifold body 100, which, as described above, has a first valve stem orifice 106 through the outer wall 104 of the first three-way valve body 120, a second valve stem orifice 206 through the outer wall 104 of the first three-way valve body 220, and a third valve stem orifice 308 through the outer wall 104 of the two-way balancing valve body 280.

[0077] The devices 1000 and 1002 may also include corresponding versions of the first valve body fitting and the second outlet fitting. In the device 1000, the first valve body fitting 132 includes a locked union nut 134; the second outlet fitting 272 includes a locked union nut 274. In the device 1002, the first valve body fitting 122 has a fixed threaded fitting 124, and the second outlet fitting 262 has a fixed threaded fitting 264.

[0078] Reference Figures 7 to 9 In another aspect, a manifold body 1100 is disclosed for use in an apparatus 2000, 2002 for connecting a downstream fluid outlet and an upstream fluid source in fluid communication with a fluid-based heat transfer apparatus. Figure 10 to Figure 11 ) and Device 2002( Fig.12 ) may differ only in the fittings provided at the first inlet 140 and the second outlet 260. Various elements including valves and ports may be engaged with the manifold body 1100 and housed within or adjacent to the manifold body 1100 to form the apparatus 2000, 2002. The manifold body 1100 may include the following components, as shown, which are identical to the corresponding components of the manifold body 100: a first three-way valve body 120 in fluid communication with the first inlet 140 of the manifold body 1100, the first outlet 160 of the manifold body 1100, and the cross-conduit 180 of the manifold body 1100; a primary chamber 102 between the first inlet 140 of the manifold body 1100 and the first outlet 160 of the manifold body 1100; a second three-way valve body 220 in fluid communication with the second inlet 240 of the manifold body 1100, the second outlet 260 of the manifold body 1100, and the cross-conduit 180 of the manifold body 1100.

[0079] The pressure independent control valve body 1280 may be disposed in fluid communication with the second inlet 240 and the second outlet 260. The pressure independent control valve body 1280 differs in size and depth from the bidirectional balancing valve body 280, but is similar in many respects to the bidirectional balancing valve body 280. The secondary chamber 1202 extends between the second inlet 240 of the manifold body 1100 and the second outlet 260 of the manifold body 1100. The secondary chamber 1202 differs in size and some details from the secondary chamber 202, but otherwise provides similar connections to similar or identical components. The manifold body 1100 is integrally formed and maintains the primary chamber 102 and the secondary chamber 1202 in a spaced-apart relationship. The method of forming the manifold body 1100 and its physical characteristics are substantially the same as described above with respect to the manifold body 100. The cross conduit 180 of the manifold body 1100 is substantially the same as described above with respect to the manifold body 100.

[0080] The manifold body 1100 may also include a drain port aperture 302 through the outer wall 104 of the manifold body 1100 between the first inlet 140 of the manifold body 1100 and the first outlet 160 of the manifold body 1100 , the drain port aperture 302 being in direct fluid communication with the primary cavity 102 .

[0081] The manifold body 1100 may also include a primary cavity pressure temperature port orifice 1322 through the outer wall 1104 of the manifold body 1100 between the first inlet 140 of the manifold body 1100 and the first outlet 160 of the manifold body 1100 , the primary cavity pressure temperature port orifice 1322 being in direct fluid communication with the primary cavity 102 .

[0082] The manifold body 1100 may also include: a first secondary chamber pressure-temperature port orifice 1342 passing through the outer wall of the manifold body 1100 between the second inlet 240 of the manifold body 1100 and the second outlet 260 of the manifold body 1100, the first secondary chamber pressure-temperature port orifice 1342 being directly fluidically connected to the secondary chamber 1202; and a second secondary chamber pressure-temperature port orifice 1362 passing through the outer wall of the manifold body 1100 between the second inlet 240 of the manifold body 1100 and the second outlet 260 of the manifold body 1100, the second secondary chamber pressure-temperature port orifice 1362 being directly fluidically connected to the secondary chamber 1202.

[0083] Manifold body 1100 may also include first and second secondary chamber pressure temperature port orifices 1342, 1362 spaced apart along a path from second inlet 240 to second outlet 260. This arrangement may facilitate measuring pressure to determine flow from second inlet 240 to second outlet 260.

[0084] The manifold body 1100 may also include a bracket 380 extending between the first three-way valve body 120 and the second three-way valve body 220 and configured to hold the first three-way valve body 120 and the second three-way valve body 220 in a spaced relationship, as described above with respect to the manifold body 100. The bracket 380 may have a mounting device 382 for attaching the manifold body 1100 to a structural element, as described above with respect to the manifold body 100.

[0085] The manifold body 1100 may also include a first stem aperture 106 through an outer wall 1104 of the first three-way valve body 120 , a second stem aperture 206 through an outer wall 1104 of the second three-way valve body 220 , and a third stem aperture 1308 through an outer wall 1104 of the pressure independent control valve body 1280 .

[0086] Reference Figures 10 to 12Further examples of apparatus 2000, 2002 for connecting a downstream fluid outlet and an upstream fluid source in fluid communication with a fluid-based heat transfer apparatus may include a manifold body 1100 as described above. Apparatus 2000 ( Fig.10 and Fig.11 ) and Device 2002( Fig.12 ) may differ only in the fittings provided at the first inlet 140 and the second outlet 260. Various components including valves and ports may be engaged with and housed within or adjacent to the manifold body 1100 to form the apparatus 2000, 2002. A first valve 400 is provided in the first three-way valve body 120 and has at least a first passage 402, a second passage 404, and a third passage 406; a second valve 500 is provided in the second three-way valve body 220 and has at least a first passage 502, a second passage 504, and a third passage 506; a third valve in the form of a pressure independent control valve 1600 (commonly referred to as a "PICV") is provided in the pressure independent control valve body 1280. The first valve body fitting 122 is configured to provide a sealed connection with the first inlet 140. The first outlet fitting 162 is configured to provide a sealed connection with the first outlet 160. The second inlet fitting 242 is configured to provide a sealed connection with the second inlet 240 ; the second outlet fitting 262 is configured to provide a sealed connection with the second outlet 260 ; and the drain assembly 300 is disposed in the drain port aperture 302 .

[0087] The first valve 400, the second valve 500, the drain valve 312 and the pressure independent control valve 1600 may be used to direct flow in a variety of ways during use, as described below.

[0088] The devices 2000, 2002 may also include a primary chamber pressure temperature port orifice 1322 passing through the outer wall 1104 of the manifold body 1100 between the first inlet 140 of the manifold body 1100 and the first outlet 160 of the manifold body 1100, the primary chamber pressure temperature port orifice 1322 being directly fluidically connected to the primary chamber 102; and a primary chamber pressure temperature port 320 sealingly engaged with the primary chamber pressure temperature port orifice 1322.

[0089] The apparatus 2000, 2002 may also include a first secondary chamber pressure temperature port orifice 1342 through the outer wall of the manifold body 1100 between the second inlet 240 of the manifold body 1100 and the second outlet 260 of the manifold body 1100, the first secondary chamber pressure temperature port orifice 1342 being in direct fluid communication with the secondary chamber 1202. A second secondary chamber pressure temperature port orifice 1362 through the outer wall of the manifold body 1100 between the second inlet 240 of the manifold body 1100 and the second outlet 260 of the manifold body 1100, the second secondary chamber pressure temperature port orifice 1362 being in direct fluid communication with the secondary chamber 1202.

[0090] The primary cavity pressure temperature port 320 sealingly engages the primary cavity pressure temperature port orifice 1322. The secondary cavity pressure temperature port 340 sealingly engages the first secondary cavity pressure temperature port orifice 1342. The second secondary cavity pressure temperature port 340 sealingly engages the second secondary cavity pressure temperature port orifice 1362.

[0091] The apparatus 2000, 2002 may also include a first secondary chamber pressure temperature port orifice 1342 and a second secondary chamber pressure temperature port orifice 1362 spaced apart along a path from the second inlet 240 to the second outlet 260. This arrangement allows for the measurement of the pressure of the fluid moving from the second inlet 240 to the second outlet 260. A flow restrictor or venturi ( Fig.11 ), wherein the first secondary chamber pressure temperature port orifice 1342 and the second secondary chamber pressure temperature port orifice 1362 are located upstream and downstream, allowing pressure measurement before, adjacent to or after the venturi tube to allow calculation (or lookup) of the corresponding flow rate from the second inlet 240 to the second outlet 260.

[0092] The apparatus 2000, 2002 may also include a bracket 380 extending between the first three-way valve body 120 and the second three-way valve body 220 and configured to hold the first three-way valve body 120 and the second three-way valve body 220 in a spaced relationship. The bracket 380 may have a mounting device 382 for attaching the manifold body 1100 to a structural element.

[0093] The apparatus 2000 , 2002 may also include a first stem aperture 106 through the outer wall 1104 of the first three-way valve body 120 , a second stem aperture 206 through the outer wall 1104 of the second three-way valve body 220 , and a third stem aperture 1308 through the outer wall 1104 of the pressure independent control valve body 1280 .

[0094] The apparatus 2000, 2002 may also include a pressure-independent control valve 1600 having a first passage 1602, a second passage 1604, an opening and closing mechanism 1606, an actuator housing 1608, and an actuator 1610. Various examples of the pressure-independent control valve 1600 are known in the art and commercially available, and are configured to maintain a set flow rate despite changes in the pressure of the fluid provided to the inlet or first passage 1602 of the pressure-independent control valve 1600. The actuator 1610 may be operably connected to a remote control system, such as a thermostat or other controller, to select a desired flow rate through the pressure-independent control valve 1600. The actuator 1610 may then adjust the opening and closing mechanism 1606 to a state corresponding to the desired flow rate. The pressure-independent control valve 1600 includes a pressure compensating mechanism that maintains a constant pressure drop across the opening and closing mechanism of the pressure-independent control valve 1600 so that the pressure-independent control valve 1600 reliably allows a selected flow regardless of changes in the pressure supplied to the pressure-independent control valve 1600 through the second inlet 240.

[0095] The first valve body fittings can be used as follows Fig.12 The first valve body fitting 122 shown in the figure, or Figure 10 to Figure 11 The drain assembly 300 may be disposed in the drain port aperture 302 and may include the drain assembly 300 described above with reference to FIG. 1 . The drain assembly 300 may be disposed in the drain port aperture 302 and may include the drain assembly 300 described above with reference to FIG. 1 . The drain assembly 300 may be disposed in the drain port aperture 302 and may include the drain assembly 300 described above with reference to FIG. 1 . The drain assembly 300 may be disposed in the drain port aperture 302 and may include the drain assembly 300 described above with reference to FIG. 1 . Figures 4 to 5 Describe the components. Fig.12 , the apparatus 2000 may further include: a first valve body fitting 122 having a fixed threaded fitting 124; and a second outlet fitting 262 including a fixed threaded fitting 264. Figure 10 to Figure 11 , the apparatus 2002 may include a first valve body fitting 132 having a locked union nut 134 ; and a second outlet fitting 272 having a locked union nut 274 .

[0096] In use, the apparatus 1000, 1002, 2000, 2002 may be connected between an upstream fluid source and a heat transfer apparatus, and between a heat transfer apparatus and a downstream fluid outlet. The first valve 400, second valve 500, drain valve 312 and third valve 600 or pressure independent control valve 1600 may be used to direct flow in a variety of ways.

[0097] Under normal operating conditions, the drain valve 312 is closed. The first valve 400 is arranged to allow fluid to flow from the first inlet 140 and the first outlet 160, and the second valve 500 is arranged to allow fluid to flow from the second inlet 240 and the second outlet 260, wherein the crossover conduit 180 is closed by the first valve 400 and / or the second valve 500. The third valve 600 or the pressure independent control valve 1600 operates as a throttling valve to control the fluid flow from the second inlet 240 to the second outlet 260.

[0098] To bypass the heat transfer device and drain valve 312, first valve 400 may be configured to allow fluid to flow from first inlet 140 through cross conduit 180. Second valve 500 may be configured to direct fluid flow from cross conduit 180 to second outlet 260. The result of this configuration bypasses the heat transfer device and portions of the devices 1000, 1002, 2000, 2002 except for portions on the path from first inlet 140 through cross conduit 180 to second outlet 260.

[0099] To create a flushing condition, the first valve 400 may be configured to allow fluid to flow from the first inlet 140 through the crossover conduit 180. The second valve 500 may be configured to allow fluid to flow from the crossover conduit 180 to the second inlet 240. The drain valve 312 and drain cap 304 may be opened to allow fluid to flow therethrough. In this configuration, fluid flows from the first inlet 140, flows through the second inlet 240 in the opposite direction into the heat transfer device, flows through the first outlet 160 in the opposite direction, flows through the orifice 305 and the filter 310 in the opposite direction, and exits the system through the drain port orifice 302. The flushing condition may allow debris trapped by the filter 310 to be flushed through the drain port orifice 302.

[0100] Although specific and different embodiments are shown in the drawings, various individual elements or combinations of elements from different embodiments can be combined with each other while complying with the concept and scope of the present disclosure. Therefore, individual features described herein for only one embodiment should not be interpreted as being incompatible with other embodiments described herein.

[0101] Those skilled in the art will appreciate that various modifications and variations may be made to the above disclosure without departing from the broad inventive concept thereof. Some of these have been discussed above, while others will be apparent to those skilled in the art. Therefore, it should be understood that the present invention is not limited to the specific embodiments disclosed, but is intended to encompass modifications within the spirit and scope of the present disclosure.

Claims

1. A manifold body for use in an apparatus for connecting a downstream fluid outlet and an upstream fluid source in fluid communication with a fluid-based heat transfer apparatus, characterized in that: The manifold body comprises: a first three-way valve body (120) in fluid communication with a first inlet (140) of the manifold body, a first outlet (160) of the manifold body, and a crossover conduit (180) of the manifold body; a primary chamber (102) between the first inlet (140) of the manifold body and the first outlet (160) of the manifold body; a second three-way valve body (220) in fluid communication with a second inlet (240) of the manifold body, a second outlet (260) of the manifold body, and the crossover conduit (180) of the manifold body; a two-way balancing valve body (280) in fluid communication with the second inlet (240) and the second outlet (260); and a secondary chamber between a second inlet (240) of the manifold body and a second outlet (260) of the manifold body; Wherein, the manifold body is integrally formed, and the primary cavity (102) and the secondary cavity are kept in a spaced relationship; and The crossover conduit (180) of the manifold body includes a direct fluid path (182) from the first three-way valve body (120) to the second three-way valve body (220).

2. The manifold body according to claim 1, characterized in that It also includes: A drain port aperture (302) is provided through the outer wall of the manifold body between the first inlet (140) of the manifold body and the first outlet (160) of the manifold body, the drain port aperture (302) being in direct fluid communication with the primary chamber (102).

3. The manifold body according to claim 1, characterized in that It also includes: A primary chamber pressure temperature port orifice is provided through the outer wall of the manifold body between the first inlet (140) of the manifold body and the first outlet (160) of the manifold body, the primary chamber pressure temperature port orifice being in direct fluid communication with the primary chamber (102).

4. The manifold body according to claim 1 or 2, characterized in that: It also includes: A first secondary chamber pressure temperature port orifice is formed through the outer wall of the manifold body between the second inlet (240) of the manifold body and the second outlet (260) of the manifold body, the first secondary chamber pressure temperature port orifice being in direct fluid communication with the secondary chamber.

5. The manifold body according to claim 4, characterized in that It also includes: A second secondary chamber pressure temperature port orifice is formed through the outer wall of the manifold body between the second inlet (240) of the manifold body and the second outlet (260) of the manifold body, the second secondary chamber pressure temperature port orifice being in direct fluid communication with the secondary chamber.

6. The manifold body according to claim 5, characterized in that wherein the first secondary chamber pressure temperature port orifice and the second secondary chamber pressure temperature port orifice are spaced apart along a path from the second inlet (240) to the second outlet (260).

7. The manifold body according to claim 1, characterized in that It also includes a bracket (380) extending between the first three-way valve body (120) and the second three-way valve body (220) and configured to keep the first three-way valve body (120) and the second three-way valve body (220) in a spaced relationship.

8. The manifold body according to claim 7, characterized in that The bracket (380) has mounting means (382) for attaching the manifold body to a structural element.

9. The manifold body according to claim 1, characterized in that It also includes: a first valve stem orifice (106) passing through the outer wall of the first three-way valve body (120), a second valve stem orifice (206) passing through the outer wall of the second three-way valve body (220), and a third valve stem orifice passing through the outer wall of the two-way balancing valve body (280).

10. An apparatus for connecting a downstream fluid outlet in fluid communication with a fluid-based heat transfer apparatus and an upstream fluid source, characterized in that: The device comprises: A manifold body comprising a first three-way valve body (120) in fluid communication with a first inlet (140) of the manifold body, a first outlet (160) of the manifold body, and a crossover conduit (180) of the manifold body; a primary chamber (102) between the first inlet (140) of the manifold body and the first outlet (160) of the manifold body; a second three-way valve body (220) in fluid communication with a second inlet (240) of the manifold body, a second outlet (260) of the manifold body, and the crossover conduit (180) of the manifold body; a two-way balancing valve body (280) in fluid communication with the second inlet (240) and the second outlet (260); a secondary chamber between the second inlet (240) of the manifold body and the second outlet (260) of the manifold body; a drain port aperture (302) extending through an outer wall of the manifold body between the first inlet (140) of the manifold body and the first outlet (160) of the manifold body, the drain port aperture (302) being in direct fluid communication with the primary chamber (102); Wherein, the manifold body is integrally formed, and the primary cavity (102) and the secondary cavity are kept in a spaced relationship; and wherein the crossover conduit (180) of the manifold body includes a direct fluid path (182) from the first three-way valve body (120) to the second three-way valve body (220); a first valve (400) disposed in the first three-way valve body (120) and having at least a first passage, a second passage and a third passage; a second valve (500) disposed in the second three-way valve body (220) and having at least a first passage, a second passage and a third passage; a third valve (600), the third valve (600) being disposed in the bidirectional balancing valve body (280), the third valve (600) being manually actuated and having at least a first passage and a second passage; a first valve body fitting engaged with the first three-way valve body (120); a first outlet fitting (162) engaged with the first outlet (160); a second inlet fitting (242) engaged with the second inlet (240); a second outlet fitting engaged with the second outlet (260); A drain assembly (300) is disposed in the drain port aperture (302).

11. The device according to claim 10, characterized in that It also includes: a primary chamber pressure temperature port orifice extending through an outer wall of the manifold body between a first inlet (140) of the manifold body and the first outlet (160) of the manifold body, the primary chamber pressure temperature port orifice being in direct fluid communication with the primary chamber (102); and A primary chamber pressure temperature port (320) is sealingly engaged with the primary chamber pressure temperature port orifice.

12. The device according to claim 11, characterized in that It also includes: a first secondary chamber pressure temperature port orifice extending through the manifold body outer wall between the second inlet (240) of the manifold body and the second outlet (260) of the manifold body, the first secondary chamber pressure temperature port orifice being in direct fluid communication with the secondary chamber; and A first secondary chamber pressure temperature port (340) is sealingly engaged with the secondary chamber pressure temperature port orifice.

13. The device according to claim 12, characterized in that It also includes: a second secondary chamber pressure temperature port orifice extending through the outer wall of the manifold body between the second inlet (240) of the manifold body and the second outlet (260) of the manifold body, the second secondary chamber pressure temperature port orifice being in direct fluid communication with the secondary chamber; A second secondary chamber pressure temperature port (360) is sealingly engaged with the second secondary chamber pressure temperature port orifice.

14. The device according to claim 13, characterized in that wherein the first secondary chamber pressure temperature port orifice and the second secondary chamber pressure temperature port orifice are spaced apart along a path from the second inlet (240) to the second outlet (260).

15. The device according to claim 10, characterized in that It also includes a bracket (380) extending between the first three-way valve body (120) and the second three-way valve body (220) and configured to keep the first three-way valve body (120) and the second three-way valve body (220) in a spaced relationship.

16. The device according to claim 15, characterized in that The bracket (380) has mounting means (382) for attaching the manifold body to a structural element.

17. The device according to claim 10, characterized in that It also includes: a first valve stem orifice (106) passing through the outer wall of the first three-way valve body (120), a second valve stem orifice (206) passing through the outer wall of the second three-way valve body (220), and a third valve stem orifice passing through the outer wall of the two-way balancing valve body (280).

18. The device according to claim 10, characterized in that in The first valve body fitting comprises a fixed threaded fitting; and The second outlet fitting comprises a fixed threaded fitting.

19. The device according to claim 10, characterized in that in The first valve body fitting comprises a locked union nut; and The second outlet fitting includes a locking union nut.

20. A manifold body for use in an apparatus for connecting a downstream fluid outlet and an upstream fluid source in fluid communication with a fluid-based heat transfer apparatus, characterized in that: The manifold body comprises: a first three-way valve body (120) in fluid communication with a first inlet (140) of the manifold body, a first outlet (160) of the manifold body, and a crossover conduit (180) of the manifold body; a primary chamber (102) between the first inlet (140) of the manifold body and the first outlet (160) of the manifold body; a second three-way valve body (220) in fluid communication with a second inlet (240) of the manifold body, a second outlet (260) of the manifold body, and the crossover conduit (180) of the manifold body; a pressure independent control valve body (1280) in fluid communication with the second inlet (240) and the second outlet (260); and a secondary chamber between the first inlet (140) of the manifold body and the first outlet (160) of the manifold body; The manifold body is integrally formed so that the primary chamber (102) and the secondary chamber maintain a spaced relationship; and The crossover conduit (180) of the manifold body includes a direct fluid path (182) from the first three-way valve body (120) to the second three-way valve body (220).

21. The manifold body according to claim 20, characterized in that It also includes: A drain port aperture (302) is formed through the manifold body outer wall between the first inlet (140) of the manifold body and the first outlet (160) of the manifold body, the drain port aperture (302) being in direct fluid communication with the primary chamber (102).

22. The manifold body of claim 20, wherein: It also includes: A primary chamber pressure temperature port orifice is provided through the manifold body outer wall between the first inlet (140) of the manifold body and the first outlet (160) of the manifold body, the primary chamber pressure temperature port orifice being in direct fluid communication with the primary chamber (102).

23. The manifold body of claim 22, wherein: It also includes: A first secondary chamber pressure temperature port orifice is formed through the outer wall of the manifold body between the second inlet (240) of the manifold body and the second outlet (260) of the manifold body, the first secondary chamber pressure temperature port orifice being in direct fluid communication with the secondary chamber.

24. The manifold body of claim 23, wherein: It also includes: A second secondary chamber pressure temperature port orifice is formed through the manifold body outer wall between the second inlet (240) of the manifold body and the second outlet (260) of the manifold body, the second secondary chamber pressure temperature port orifice being in direct fluid communication with the secondary chamber.

25. The manifold body of claim 24, wherein: wherein the first secondary chamber pressure temperature port orifice and the second secondary chamber pressure temperature port orifice are spaced apart along a path from the second inlet (240) to the second outlet (260).

26. The manifold body of claim 20, wherein: It also includes a bracket (380) extending between the first three-way valve body (120) and the second three-way valve body (220) and configured to keep the first three-way valve body (120) and the second three-way valve body (220) in a spaced relationship.

27. The manifold body of claim 26, wherein: The bracket (380) has mounting means (382) for attaching the manifold body to a structural element.

28. The manifold body of claim 20, wherein: It also includes: a first valve stem orifice (106) passing through the outer wall of the first three-way valve body (120), a second valve stem orifice (206) passing through the outer wall of the second three-way valve body (220), and a third valve stem orifice passing through the outer wall of the pressure independent control valve body (1280).

29. An apparatus for connecting a downstream fluid outlet in fluid communication with a fluid-based heat transfer apparatus and an upstream fluid source, characterized in that: The device comprises: A manifold body comprising a first three-way valve body (120) in fluid communication with a first inlet (140) of the manifold body, a first outlet (160) of the manifold body, and a crossover conduit (180) of the manifold body; a primary chamber (102) between the first inlet (140) of the manifold body and a first outlet (160) of the manifold body; a second three-way valve body (220) in fluid communication with a second inlet (240) of the manifold body, a second outlet (260) of the manifold body, and the crossover conduit (180) of the manifold body; a pressure independent control valve body (1280) in fluid communication with the second inlet (240) and the second outlet (260); a secondary chamber between the second inlet (240) of the manifold body and the second outlet (260) of the manifold body; a drain port orifice (302) extending through an outer wall of the manifold body between the first inlet (140) of the manifold body and the first outlet (160) of the manifold body, the drain port orifice (302) being in direct fluid communication with the primary chamber (102); The manifold body is integrally formed so that the primary chamber (102) and the secondary chamber maintain a spaced relationship; and wherein the crossover conduit (180) of the manifold body includes a direct fluid path (182) from the first three-way valve body (120) to the second three-way valve body (220); a first valve (400) disposed in the first three-way valve body (120) and having at least a first passage, a second passage and a third passage; a second valve (500) disposed in the second three-way valve body (220) and having at least a first passage, a second passage and a third passage; a third valve (600), the third valve (600) being disposed in the pressure independent control valve body (1280), the third valve (600) being manually actuated and having at least a first passage and a second passage; a first valve body fitting engaged with the first three-way valve body (120); a first outlet fitting (162) engaged with the first outlet (160); a second inlet fitting (242) engaged with the second inlet (240); a second outlet fitting engaged with the second outlet (260); A drain assembly (300) is disposed in the drain port aperture (302).

30. The device according to claim 29, characterized in that It also includes: a primary chamber pressure temperature port orifice extending through an outer wall of the manifold body between the first inlet (140) of the manifold body and the first outlet (160) of the manifold body, the primary chamber pressure temperature port orifice being in direct fluid communication with the primary chamber (102); and A primary chamber pressure temperature port (320) is sealingly engaged with the primary chamber pressure temperature port orifice.

31. The device according to claim 29 or 30, characterized in that It also includes: a first secondary cavity pressure temperature port orifice extending through the outer wall of the manifold body between the second inlet (240) of the manifold body and a second outlet (260) of the manifold body, the secondary cavity pressure temperature port orifice being in direct fluid communication with the secondary cavity; and A first secondary chamber pressure temperature port (340) is sealingly engaged with the first secondary chamber pressure temperature port orifice.

32. The device according to claim 31, characterized in that It also includes: a second secondary chamber pressure temperature port orifice extending through the outer wall of the manifold body between the second inlet (240) of the manifold body and the second outlet (260) of the manifold body, the second secondary chamber pressure temperature port orifice being in direct fluid communication with the secondary chamber; and A second secondary chamber pressure temperature port (360) is sealingly engaged with the second secondary chamber pressure temperature port orifice.

33. The device according to claim 32, characterized in that wherein the first secondary chamber pressure temperature port orifice and the second secondary chamber pressure temperature port orifice are spaced apart along a path from the second inlet (240) to the second outlet (260).

34. The apparatus according to claim 29, characterized in that It also includes a bracket (380) extending between the first three-way valve body (120) and the second three-way valve body (220) and configured to keep the first three-way valve body (120) and the second three-way valve body (220) in a spaced relationship.

35. The device according to claim 34, characterized in that The bracket (380) has mounting means (382) for attaching the manifold body to a structural element.

36. The apparatus according to claim 29, characterized in that It also includes: a first valve stem orifice (106) passing through the outer wall of the first three-way valve body (120), a second valve stem orifice (206) passing through the outer wall of the second three-way valve body (220), and a third valve stem orifice passing through the outer wall of the pressure independent control valve body (1280).

37. The apparatus according to claim 29, characterized in that in The first valve body fitting comprises a fixed threaded fitting; and The second outlet fitting comprises a fixed threaded fitting.

38. The apparatus according to claim 29, characterized in that in The first valve body fitting comprises a locked union nut; and The second outlet fitting includes a locking union nut.

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