2533results about "Joints with sealing surfaces" patented technology

A corrugated pipe connection device including: a corrugated stainless steel pipe; a straight pipe portion formed on each end of the corrugated stainless steel pipe; a connection member made of a metal and fitted to the outer periphery of the straight pipe portion; a synthetic resin sleeve fitted to the outer periphery of the straight pipe portion and having a flange; an expansion portion expanded from the end of the straight pipe portion; and a silicone packing having a ring portion coming into contact with the expansion portion, a protrusion portion protruding inwardly from the inner periphery of the ring portion to be inserted to the inside the straight pipe portion, and an insertion portion formed on the outer periphery thereof to surround the expansion portion therewith.

A hose assembly for use with a tankless water heater. The hose assembly includes a flexible hose, a first connector assembly, and a second connector assembly. The first connector assembly is fluidly coupled with the flexible hose and includes a first fitting. The first fitting is rotatably coupled with the first connector assembly such that the first fitting is independently rotatable relative to the flexible hose. The second connector assembly is fluidly coupled with the flexible hose opposite to the first connector assembly.

The utility model relates to the field of water pipe connecting structures, in particular to a novel water pipe connecting piece which comprises a first connecting part, and a flange, an external thread part and a step part are arranged on the first connecting part. An internal thread part, an extension part, a polygonal part and a convex part are arranged on the second connecting part; the extension part is positioned on the side edge of the polygonal part; the external thread part is matched with the internal thread part when the second connecting part is rotated, the axis of the first connecting part coincides with or is parallel to the axis of the second connecting part, and the water pipe quick connector can reinforce the connecting position and prevent the connecting position from being disconnected.

To provide a pipe joint that is compact, can exert strong pipe withdrawal resistance, and is readily manufactured.SOLUTION: A pipe joint includes: a joint body 1 with a male screw 2; a box nut 3 screwed to the male screw 2 of the joint body 1; and a sleeve 7 stored in an internal storage space 10 of the box nut 3. The sleeve 7 has a single line of home base-shape recessed groove 9 and a single piece of a rectangular seal groove 12 with a seal material 13.SELECTED DRAWING: Figure 1

A pipe connector for use in high temperature environments, such as those characteristics of molten salt reactors. The pipe connector can be used in any industry that uses pipe connectors, and in particular, can be used in a molten salt system including a reactor requiring a connection rated for a maximum of about 725° C. and about 15,000 psi. The pipe connector may comprise a pin, a seal ring, a retainer ring, a box, a locking nut, and a retaining nut.

The invention relates to the technical field of pipeline movable joint manufacturing, and discloses a movable joint which comprises a first joint, a second joint, a third joint and a fourth joint. A spherical surface is arranged at the end of the second joint, and the spherical surface is used for being matched with the conical sealing surface to form sealing; the locking nut is used for connecting the first connector and the second connector, an internal thread is formed in the inner side wall of the locking nut, and the internal thread is matched with the external thread; the sealing ring is mounted between the first joint and the second joint; through the structural design of the first joint and the second joint, a formed sealing structure is provided with at least two sealing structures after being matched with a sealing ring, the sealing performance of the movable joint can be effectively improved, and even if the first two layers of sealing structures fail, the connection mode of the locking nut can also prevent the movable joint from generating overlarge leakage rate, so that the sealing performance of the movable joint is improved. The movable joint is particularly suitable for high-temperature medium pipelines, and the safety performance of the movable joint is effectively improved.

An coaxial keg connector comprising a main body (1) made of plastic and having a first inlet port (3) and a second inlet port (3) receiving a stem (2). A coaxial outlet (10) comprises an outer outlet port (11) in communication with the first inlet port (3) and an inner outlet port (12) in communication with the second inlet port. The stem (2) comprises a tubular body with a main axis (31) with an inlet and a connector for attachment to the keg at one end. The second end of the stem opposite to the first end has an outlet in fluid communication with the inner outlet port (12) and comprises a ball joint (61) rotatably mounted in and sealed with respect to the main body (1) so as to be rotatable (12) about the main axis (31) of the tubular body and rotatable (67, 68) to a limited extent about axes perpendicular to the main axis.

To provide a pipe joint that has strong pipe withdrawal resistance, is excellent in durability, and has a home base-shape recessed groove.SOLUTION: A home base-shape recessed groove 9 formed in a compressive deformable sleeve 7 has a large straddle angle θ, where a deep part tip 9A has a round shape with a specified large radius R1.SELECTED DRAWING: Figure 5

The invention relates to a pipe connecting arrangement (1, 30, 36), in particular for connecting thin-walled metal tubes (4), comprising: a tube (4) with a reshaped end portion (3, 31), where the reshaped end portion (3, 31) shows a truncated cone like shape (6) with a decreasing diameter (9) towards the connection end, and a tube end cone angle (α), forming an outer circumferential sealing surface; a connecting member (2) with a receiving recess (13) with a truncated cone like shape with an increasing diameter towards the connection end, and a receiving recess cone angle (β), forming an inner circumferential sealing surface; and a support ring (15, 26, 33) that is arranged circumferentially around at least a part of the tube end (3, 31) of the tube (4). At least a part (24) of the support ring (15, 26, 33) rests against the receiving recess (13) of the connecting member (2).

The utility model relates to a movable joint, which comprises a nut and a joint, one end of the outer peripheral wall of the joint is provided with external threads, the joint is connected with a pipeline through the external threads, the other end of the outer peripheral wall of the joint is provided with a circle of radial convex block, the radial convex block is inserted into a socket hole arranged on the nut through the joint, and the radial convex block and the inner end face of the socket hole abut against each other and are limited; the inner circumferential wall of the connector is provided with a pulling protruding block used for being matched with a special tool to pull the connector. According to the anti-theft connector, the wrenching protruding block is arranged on the inner circumferential wall of the connector, threaded connection between the connector and a pipeline can be achieved through a special tool, the connector can be prevented from being wrenched by any person, the anti-theft performance is more outstanding after installation, meanwhile, the wrenching protruding block is arranged on the inner circumferential wall of the connector, machining is more convenient, and the anti-theft performance is better. And the material utilization rate is higher.

In order to make it possible to ensure the axis alignment performance while reducing the processing cost, and to make a coupling structure compact to perform the coupling work and the detaching work of pipe members without difficulty even in a narrow work space, the coupling structure according to the invention includes a pipe coupling that couples a pair of pipe members each including a flange at an end portion in a state where the flanges of the pipe members face each other, an annular gasket interposed between the flanges of the pair of pipe members, and recesses formed individually in facing surfaces of the flanges facing each other, in which the annular gasket fitted into the respective recesses makes pipe axes of the pipe members and the annular gasket coincide with each other.

A pipe coupling has two segments with lugs adapted to receive adjustable fasteners to draw the segments together to join pipe elements. Each lug has an inner surface and a stop surface in spaced relationship. The stop surfaces on corresponding lugs contact each other when the adjustable fasteners are tightened.

A rotation sleeve grip structure for garden hoses or other tubings is provided. A hose assembly can include a hose tubing and a rotation sleeve installed over an outer surface of the hose tubing, where the rotation sleeve is constrained between first and second open ends of the hose tubing and comprises a hollow cylindrical shell configured to enclose a portion of the hose tubing along a longitudinal length. The rotation sleeve is rotatable through 360 degrees about a circumference of the outer surface of the hose tubing. An inner sleeve can be affixed to the outer surface of the hose tubing, and may be disposed between the hose tubing and the rotation sleeve. One or more circumferential rib protrusions and corresponding circumferential channels for receiving the rib protrusions can be provided between the inner sleeve and the rotation sleeve.

A semiconductor gas pipe fitting fastener is disclosed. The semiconductor gas pipe fitting fastener of the present disclosure includes: a female fitting member connected to a first pipe through which gas that is used in a semiconductor process flows; a male fitting member connected with the female fitting member by being connected to a second pipe opposite to the first pipe; a female nut member supporting the female fitting member therein; a male nut member supporting the male fitting member therein and configured to connect the female fitting member and the male fitting member by being coupled to the female nut member; and a gasket member supported on a side by the female fitting member, supported on another side by the male fitting member, and configured to prevent leakage of gas from the female fitting member and the male fitting member.

The disclosure includes a main body block 11 forming a primary-side flow path to which a fluid is supplied and a secondary-side flow path to which the fluid is discharged; a square cylinder 12 which is attached to the main body block 11 and assembles a valve drive mechanism and whose end surface is a rectangular cross-section; a valve member arranged between the main body block 11 and the cylinder 12; a fastening member 62 fastening the main body block 11 and the cylinder 12 by sandwiching a first flange provided in the main body block 11 and a second flange provided in the cylinder 12; and a fixing pin 74 communicating with a communication hole 72, which is formed in the fastening member 62, and press-fitted into the communication hole 72 and an attachment hole 71 formed at a corner portion of the cylinder 12.

A valve connector includes a body having a first end adapted to attach to an American valve, a second end opposite the first end, and a through hole extending through both ends. A shoulder portion divides the through hole into a first accommodating portion and a second accommodating portion, with a sealing ring disposed on the second accommodating portion. A control member is movably disposed in relation to the body between a first and second position. The control member includes a body portion, a guiding hole, an abutting end, and a control end adapted to communicate with an air pump device. A venting portion is arranged between the abutting end and the control end, having a first cross-sectional area smaller than a second cross-sectional area.

A conduit coupling assembly for joining together two metal conduits includes a first fitting having a first end opposite a second end, wherein the first end is threadably attached to the conduit, and a first washer attached to the second end of the first fitting, wherein the first washer is non-metallic. The coupling may further include a second fitting in abutment with the first washer, a nut surrounding the first fitting and the second fitting, and a second washer disposed between the nut and the second fitting, wherein the second washer is non-metallic.

A threaded coupling assembly include a union (12), a tube end (14), and a coupling nut (16). A pair of telescoping indicator rings (30, 32), a radially outer ring and a radially inner ring, are respectively connected to the union and the nut. The inner ring has a first visual characteristic contrasting with a second visual characteristic of the inner ring. The outer ring has a third visual characteristic contrasting with the second visual characteristic of the inner ring. The first visual characteristic is aligned with and viewable through the window (60) of the outer ring when the threaded coupling assembly is in the fully assembled state, and the first visual characteristic is out of alignment with the window when the threaded coupling assembly is not in the fully assembled state. The assembly may utilize tapered threads and have one or more features for self-alignment and / or sealability.

The utility model discloses a detachable jacket heat preservation ultrahigh pressure high temperature ball valve for butt welding heat preservation pipelines, which comprises a valve body, a valve cover, a valve rod and a ball body, the valve rod penetrates through the valve body, and one end of the valve rod located in an inner cavity of the valve body is in linkage connection with the ball body. An inlet valve seat assembly and an outlet valve seat assembly are arranged at the positions, corresponding to the two sides of the ball body, in the valve body respectively, and the valve deck is installed at the outlet end of the valve body. The inlet heat preservation jacket is arranged on the periphery of the valve body and the periphery of the valve deck and forms a first heat preservation cavity, and the high-pressure welding neck flange is detachably connected to the end of the valve deck through a fastener; the outlet heat preservation jacket is arranged on the periphery of the high-pressure butt welding flange and forms a second heat preservation cavity. The utility model not only can keep the original butt welding connection form of the thermal insulation pipe and the butt welding connection form of the high-pressure pipeline and the valve unchanged, but also can be conveniently disassembled and maintained.

The present invention eliminates a dead space between a gasket and flanges and the present invention is an annular gasket 30 attached between planar seal surfaces 12x of opposing flange portions 12, in which steps 30d are formed between radially inner surfaces 30b continuous with an inner peripheral surface 30a and radially outer surfaces 30c, each radially inner surface 30b is located axially outward the corresponding radially outer surface 30c, the radially inner surface 30b and the radially outer surface 30c each have a planar shape orthogonal to an axial direction, and each radially outer surface 30c comes into contact with the corresponding seal surface 12x after each radially inner surface 30b comes into contact with the corresponding seal surface 12x.

The utility model discloses a solenoid valve joint butt joint fixing device, which belongs to the technical field of valve joint butt joint fixing devices, and comprises a solenoid valve main body, the pipe end of the solenoid valve main body is connected with a connecting plug, the connecting plug comprises an inserting pipe, an anti-torsion ring and a socket, the connecting plug comprises a lining pipe and an outer sleeve, and the locking cover is sleeved outside the connecting plug and can be in threaded connection with the outer sleeve. A butt joint groove is formed in the anti-torsion ring, and the outer sleeve is provided with a plurality of butt joint protruding blocks. According to the technical key points, during installation, only the insertion pipe needs to be inserted into the lining pipe and the outer sleeve, then the locking cover is tightened, the locking cover is in threaded connection with the outer sleeve, the insertion pipe can be effectively prevented from being disengaged from the insertion groove, in the process, when the insertion pipe is inserted, the butt-joint protruding block and the butt-joint groove can be combined to play a guiding and positioning role, and the insertion pipe can be prevented from being disengaged from the insertion groove. The situation that the valve body deviates is avoided, installation work is facilitated, meanwhile, the anti-torsion effect can be achieved through meshing of the butt-joint protruding blocks and the butt-joint grooves, and firmness of connector connection is ensured.

A twist-lock connector for coupling sections of a system for conveying gas includes a socket connector and a fitting connector. The socket connector includes a socket twist-lock. The fitting connector includes a fitting twist-lock. The socket connector receives the fitting connector to engage the fitting twist-lock and the socket twist-lock together by rotating the fitting connector about a connector axis relative to the socket connector.

The utility model relates to the technical field of gas pipelines, in particular to a variable-wave-pitch gas appliance connecting pipe. A variable-wave-pitch gas appliance connecting pipe comprises a corrugated pipe body, a coating layer and connector assemblies connected to the two ends of the corrugated pipe body. The corrugated pipe body is composed of a wide-wave-pitch section and two dense-wave-pitch sections, and the two dense-wave-pitch sections are connected to the two ends of the wide-wave-pitch section in the length direction respectively. The two ends of the variable-wave-pitch gas appliance connecting pipe are convenient to bend, the variable-wave-pitch gas appliance connecting pipe is convenient to install in a narrow space and a place where a pipeline needs to be bent, a connector is not prone to loosening after installation, the sealing effect is good, a right-angle elbow bent by 90 degrees does not need to be welded, cost is effectively reduced, a user can conveniently judge the position where the corrugated pipe is easy to bend, operation convenience is high, and practicability is high. The technical problems that when an existing corrugated pipe is installed in a narrow space, the end of the pipe needs to be bent in a hard mode, a connector is prone to loosening, the sealing effect is affected, and the cost is high when a 90-degree right-angle elbow is used are solved.

A device for the detachable connection of a first tubular component and a second tubular component, wherein the first tubular component has a flange-like thickening in an end region facing the second component, wherein a screw nut is provided as the second tubular component which is dimensioned such that the inner opening of the screw nut can be applied over the flange-like thickening onto the first tubular component, wherein two passages located radially next to one another are provided in the outer wall of the screw nut, and wherein a flat, clamp-shaped holding component is provided, having two inner brackets corresponding to the two passages of the screw nut so that the two inner brackets can be pushed into the passages of the screw nut. The screw nut is fastened to the first component in connection with the flange-like thickening of the first component.

The utility model provides a pipeline butt joint sealing structure, which is characterized in that a movable part and a fixed part which are in sealed connection are respectively provided with a movable interface and a fixed interface which are in butt joint, and the end part of the movable interface is connected with a circle of flexible sealing gasket; the outer side of the movable connector is provided with a pressing piece used for applying pressing force towards the axis direction of the movable connector to the flexible sealing gasket. Wherein in the state that the fixing connector is arranged in the flexible sealing gasket in a penetrating mode, the pressing piece applies circumferential inward pressing force to the flexible sealing gasket so that the outer side face of the fixing connector can be attached to the inner side face of the flexible sealing gasket in a sealed mode. According to the utility model, a good sealing effect can be achieved at the joint of the pipeline butt joint.

A method for manufacturing a tube fitting includes steps of: preparing the tube fitting; and forming a resin coating layer upon a coated region provided upon the surface of the tube fitting. Forming the resin coating layer includes: dipping the tube fitting into a coating material that includes as components a polyethylene based substance, a lubricant, and solid particles and having viscosity within a range of 4.24 to 5.27 mPa·s at 25° C., and adhering the coating material to the coated region; and, drying the coating material which is adhered to the coated region of the tube fitting. In the dipping step, the mass per unit area w is controlled within a range 0.79<w<10.07 by dipping the tube fitting while regulating a temperature of the coating material within a range of 30° C. to 40° C.

A fastener for connecting a coated conduit to a fitting or to another coated conduit includes a bushing and polymeric material coating and surrounding an external surface of the bushing. The bushing includes internal and external threading The polymeric material includes a central portion coating at least the first end of the bushing, a first flexible sleeve extending from the central portion in a first direction and creating a cavity, and a second flexible sleeve extending from the central portion in a second direction, opposite the first direction. The external threading of the bushing is configured to be threaded into a fitting or conduit such that the first flexible sleeve fits over a circumference of the fitting or a coated conduit, and the internal threading of the bushing is configured to be threaded onto coated conduit such that the second flexible sleeve fits over a circumference of the coated conduit.

A fitting nut made of a resin material includes: a hollow, large-diameter tube portion having a female thread formed on its inner peripheral wall; and a small-diameter tube portion that is continuous to the large-diameter tube portion and having a hollow cylindrical shape with a smaller diameter than the large-diameter tube portion. The small-diameter tube portion includes, in the outer peripheral wall thereof, a plurality of engagement grooves that are depressed inwardly in the diameter direction of the small-diameter tube portion and extend along the longitudinal direction that is orthogonal to the diameter direction.