38 results about "Zone valve" patented technology

An apparatus and method are provided for replacing existing actuator driven zone valves in an HVAC system, and particularly valves of the rubber paddle type having actuators providing less than 90 degrees of rotation, with a ball valve including a skewed seat bearing that blocks flow through the flowpath when a valve member of the ball valve is rotated through an angle of substantially less than 90 degrees from a fully open position of the valve at which a bore in the valve member is substantially fully aligned with the flowpath. The actuator from the existing zone valve being replaced may be used with the provided ball valve apparatus and method.

An apparatus for controlling fluid flow in a medical facility includes a plurality of remotely controlled zone valves. Each zone valve is coupled to a respective fluid conduit for opening and closing the fluid conduit to control fluid flow therethrough. The apparatus also includes an access terminal installed in a user-accessible location that is located remotely from the zone valves. For example, the zone valve may be located in a ceiling, and the access terminal may be located on a wall. The access terminal has an input interface for receiving instructions to open and close the zone valves, an output device for communicating with the zone valves to remotely open and close each zone valve based on the received instructions, and an alarm for indicating when at least one of the zone valves is closed.

A method and apparatus for controlling the normal operation of a hydronic heating system, (including AC powered, gas-burning hot water boiler, multi-zone systems) using a DC power source, such as battery power, as the primary continuous source of electricity. Control functions minimize the consumption of electric power during normal operation, and eliminate standby electric consumption in order to extend the life of the batteries and maximize the run-time of the heating system. A DC to DC converter supplies low voltage DC power to the zone thermostats, and also supplies the proper voltage through zone relays to operate DC zone pumps. By allowing the use of DC power for the thermostats and zone pumps, the system eliminates the need for transformers, zone valves, and AC circulators, resulting in a large savings in electrical consumption and the elimination of the standby electric demand ("phantom load") common in conventional hydronic heating systems. A DC to AC inverter is dedicated to supply AC power for a hydronic (hot water) boiler. The inverter is switched on by relays only when needed, thereby eliminating the "phantom electric load" consumed by most boilers when standing by. A time delay relay circuit allows the boiler to go through its proper shutdown sequence before power is removed. This control system does not require any internal modification to the other heating system components.

An automated irrigation purge system utilizes a pressure purge method of discharging compressed air from a reservoir through selected irrigation zones with feedback from pressure switches to determine when to open and close each zone valve. No programming or user interaction is required beyond starting the system. The system can operate with a wide variety of irrigation systems, with varying number of zones, pipe lengths, pipe diameters, number and variety of sprinkler heads or outlets, and terrain slope. The system tracks the pressure transition time from high pressure to low pressure for each zone as it is blown out. When the current transition time is within a specified range from the previous transition time, the system knows the water has been sufficiently purged from that zone. The purge system can protect the irrigation system from high-pressure conditions, handle multiple error conditions, and maintain water valve settings during power loss.

The invention relates to a thin water mist fire extinguishing system comprising a filter, a water tank, a water supply pump, a water pump control valve, zone valves, water mist spray nozzles and an alarm device. One end of the filter is connected with a water source through a water source valve, and the other end of the filter is connected with the water tank through a pipeline. One end of the water supply pump is connected with the water tank through the pipeline, and the other end of the water supply pump is connected with the zone valves through the pipelines. The water pump control valve is connected with the water supply pump, the zone valves and the alarm device respectively through electric signals. The water mist spray nozzles are connected with the zone valves through the pipelines. Compared with the prior art, the sum of the volume of water particles with the diameters of less than 200 MMum in water mist jet flow sprayed by the thin water mist fire-extinguishing system is not less than 90% of the total volume, the size of water drops of the thin water mist is small, and the thin water mist has large specific surface area, high density and good smoke-removing effect.

A system, apparatus, and method for a differential temperature managed integral, free standing, hydronic heating appliance uses a high-mass heat source coupled to a single, highly-efficient, variable speed, Electronically Commutated Motor (ECM)-driven Delta-T stand-alone system circulator which feeds one or more zone valves governing flow to one or more hydronic zones. Components are integrated into simplified, compact, assemblies. Zone valve packaging of a compact header improves hydronic performance (head pressure reduction and increased flow), complementing zone valve performance and reducing zone valve wiring labor and material content. Returns have full port valves and the boiler includes isolation valves. All manually activated valves are full port. This can include full port boiler isolation valves, circulator isolation valves and return valves. Paralleled, ganged, alignment of state-indicating-lamped zone valves provides rapid, functional indication of component and system performance while the need for a zone valve panel commonly found on hydronic heating systems is negated.

A testing apparatus (11) for testing a fire sprinkler system combines components for testing both the function of a tamper switch (not shown) incorporated into local zone valve (18) and the working of a flow switch (12) that detects flow in a pipe (13). The assembly (10) also comprises a module (19) which is connected to the flow switch (12), the pump (16) and the local zone valve (18) to monitor their performance. A master controller (20) is provided for reading data from the module (19) and for instructing the module (19) to control the operation of the various components of the testing apparatus (11) connected thereto. Information received by the master controller (20) can be relayed to a building's fire alarm panel (21). In normal use, the module (19) will transmit signals to the master controller (20) to activate the fire alarm via the fire alarm panel (21) in response to monitoring of the flow switch (12) and zone valve (18). In test mode, the module (19) is operable to disable the alarm being activated. This allows testing to take place without generating false alarms. The module (19) can also correlate the date and time of the test with the outcome of the test (i.e. pass or fail) and send this information to the master controller (20) for printing or archiving.

The invention discloses a foam spray fire extinguishing device, which comprises a power bottle set, a driving device, a water storage device, a foam stock solution storage device and a zoning valve, wherein the power bottle set is connected with the water storage device through a collecting pipe; an output pipeline of the water storage device is divided into two paths through the zoning valve, and the two paths are communicated with two independent tank bodies of the foam stock solution storage device; and a capsule filled with a foam stock solution is arranged in one tank body of the foam stock solution storage device, and the other tank body is communicated with the capsule and provided with a spray outlet. Fire fighting water and the foam stock solution are separately filled in the fire extinguishing device, so that the storage time of consumables is prolonged, and the using cost of a fire fighting person is reduced; the problem of corrosion is not considered in a water tank (the water storage device), and a common normal pressure storage tank can be adopted, so that the manufacturing cost is reduced; and after being used up, the foam solution and the water can be filled in a ratio, so that continuous fire extinguishment can be realized.

The invention concerns a pneumatic control device (1) for multi-zone fire extinguishing installations, comprising a control pressure inlet port (25) for connection to a control pressure source (105), in particular a pressurised gas container, a number (m) of first control pressure outlet ports (17) for connection to a corresponding number of extinguishing agent containers (107), a number (n) of second control pressure outlet ports (19) for connection to a corresponding number of zone valves (111), and a plurality of function modules (7, 9). It is proposed that the invention further includes a quantity control module (9) for the association of a selection of the first number of control pressure outlet ports (17) with a selection of the second control pressure outlet ports (19), and an electrical control valve module (7) which is controllable from the exterior for selectively opening or closing the second control pressure inlet ports (19) and which can be connected in particular in signal-conducting relationship to a fire alarm and/or extinguishing control station (103), wherein the function modules (7, 9) are operatively connected together.

The invention provides a petroleum pipeline stop valve and a petroleum conveying system. The petroleum pipeline stop valve comprises a hand wheel, a valve body, a valve rod and a valve flap, wherein avalve cavity for allowing an oil body to circulate is formed inside the valve body, a mounting opening is formed in one end of the valve cavity, and a liquid inlet pipeline and a liquid outlet pipeline which communicate with the valve cavity are arranged at the other end of the valve cavity; a wheel shaft of the hand wheel is connected with one end of the valve rod, the other end of the valve rodis provided with the valve flap, and the other end of the valve rod extends into the valve cavity through the mounting opening, so that the valve flap is located in an communication area between theliquid inlet pipeline and the liquid outlet pipeline; the hand wheel is used for rotating and driving the valve rod to reciprocate in the direction extending into the valve cavity, and the valve flapis used for blocking or conducting the communication area under the driving of the valve rod; and a sealing assembly is further arranged between the valve rod and the mounting opening, and the sealingassembly is used for sealing a gap between the valve rod and the mounting opening. According to the petroleum pipeline stop valve, the sealing performance of the stop valve can be improved, the leakage of the stop valve is prevented, and the safe and efficient conveying performance of a petroleum pipeline is ensured.

A method of wirelessly transmitting alarm condition information is applicable to an irrigation zone including a zone input conduit connected to a main distribution conduit of the irrigation system. The zone further includes a zone distribution conduit, a zone valve connected between the zone input conduit and the zone distribution conduit, and at least one irrigation emitter connected in the zone distribution conduit. The method includes detecting an alarm condition at the irrigation zone, and at a designated time proximate to one of a start time and an end time for to an irrigation session for the irrigation zone, controlling the zone valve according to a zone valve control sequence corresponding to the detected alarm condition. The zone valve control sequence comprises a predefined pattern of open and closed states of the zone valve over time.

The invention relates to a vacuum valve (1) for closing a flow path (F) in an airtight manner by linear movement, the vacuum valve comprising: a closing member (5), which is linearly displaceable; a second part of the valve housing (2) A sealing surface (10), the first sealing surface closing the opening (3); and, a second sealing surface (11) of the closing member (5), the second sealing surface corresponding to the first sealing surface (10). In the closed position (C), the second sealing surface (11) is in sealing contact with the first sealing surface (10), said contact being pressed against the first sealing surface (10) in the closing direction (8), and the closing member ( 5) Close the opening (3) in an airtight manner. In the area between the opening (3) and the first sealing surface (10), the valve housing (2) comprises a first inclined surface (22) closing the opening (3), and the closing member (5) comprises a first inclined surface parallel to the first inclined surface (22) extends and corresponds to the second inclined surface (23) of the first inclined surface (22). The inclined surfaces ( 22 , 23 ) having an inclination angle ( 24 ) between 3 and 15 degrees relative to the geometrical adjustment axis ( 6 ) are positioned relative to each other such that in the closed position (C) of the closing member ( 5 ), p. The two inclined surfaces ( 23 ) are arranged in parallel positions opposite to the first inclined surface ( 22 ), and have a distance (v) of 0 to 0.6 mm between them.

The invention discloses a valve diaphragm with high fatigue performance, and belongs to the technical field of regulating valves. The edge of the valve diaphragm is provided with an installation sealing area (1) fixedly connected with the periphery of an upper diaphragm capsule and the periphery of a lower diaphragm capsule, and the center of the valve diaphragm is a reciprocating flexing area (2)capable of moving in a reciprocating mode after being stressed; the thickness of the installation sealing area (1) is larger than that of the reciprocating flexing area (2), and a transition step (3)is formed between the installation sealing area (1) and the reciprocating flexing area (2) of the valve diaphragm; the installation sealing area (1) of the valve diaphragm is fixed to the periphery of the upper diaphragm capsule and the periphery of the lower diaphragm capsule, and the space between the upper diaphragm capsule and the lower diaphragm capsule is sealed; the inner side of the transition step (3) does not make contact with the upper diaphragm capsule and the lower diaphragm capsule when the valve diaphragm is not in the working state; and when the valve diaphragm works, the reciprocating flexing area (2) does reciprocating movement under the action of valve air pressure. The valve diaphragm is provided with the step, so that the fatigue performance of the valve diaphragm canbe remarkably improved.