Abstract: A rotary joint capable of lubricating a sealing surface of a mechanical seal forming a fluid passage through which a gas flows using a liquid even when the liquid flows through only one fluid passage is disclosed. A rotary joint includes a plurality of mechanical seals provided in an axial direction in an annular space between a case body and a shaft body to form a first intermediate flow passage that connects a first outer flow passage and a first inner flow passage of a first fluid passage through which a liquid flows to each other and form a second intermediate flow passage that connects a second outer flow passage and a second inner flow passage of a second fluid passage through which a gas flows to each other.

Abstract: A fluid rotary joint assembly capable of high rotational speed exceeding a maximum rotational speed of a single rotary joint is disclosed herein. For example, the fluid rotary joint may be capable of exceeding rotational speeds greater than 1500 RPM. The fluid rotary joint assembly may have several single-stage fluid rotary joints and multiple gear devices wherein a relative speed between the first and second rotary parts of each single stage fluid rotary joint does not exceed a maximum rotary speed (e.g., 500 rpm). The fluid rotary joint assembly incorporates speed reduction within each stage through the gear device. By controlling the relative speed between the first and second parts of each of the fluid rotary joints to be less than or equal to a maximum allowable rotational speed (e.g., less than or equal to 500 RPM), the fluid rotary joint assembly provides for reliable operation at high rotational speeds between the first stage and the last stage.

Abstract: Connectors may include a first part and a second part that are adapted to be locked together. The first and second parts may include compatible features that provide one or more connections, such as electrical and hydraulic connections, when the first and second part are secured together.

Abstract: A method for coupling a fitting to a tubing end includes pressing a collar over the outer surface of the tubing until the strain on the collar in the hoop direction is at a predetermined level, or pressing a collar with a predetermined axial load.

Abstract: A sealing cover with quick-plug interface, comprising: cover body, above which a through hole is arranged, and in which a communication hole is arranged, and said through hole is connected with said communication hole; an annular sealing member and an annular fixing sleeve are arranged in said through hole, and said sealing member is arranged at the bottom of said through hole, and said fixing sleeve is arranged above said sealing member; said sealing member and said fixing sleeve are both clipped to an inner wall of the through hole, and said sealing member is made of a flexible material. There is no metal material in contact with the fluid inside the sealing cover with quick-plug interface, so there is no hidden danger of corrosion in long-term use, and the defect that the metal material is not resistant to corrosive fluids is avoided.

Abstract: Threaded joint for oil and gas pipes, including a female part and a male part, the female part being a joint tubular body including a threaded coupling section, a seal section which prolongs the coupling section, the male part including a tubular body which includes a first section which external surface is threaded, a second sealing section including a seal surface which cooperates with the female part seal surface for sealing the joint, the sealing surface of the female part being made of conical sections, the sealing surface of the male part includes a proximal portion closer to the first section and a distal portion, the proximal section portion being a conical surface which forms a first seal with the sealing surface of the female part and the distal portion having a convex surface which forms a second seal with the sealing surface of the female part.

Abstract: A one-touch high-pressure fluid fitting using a spring, in which the spring is used to press a sealing ring and simultaneously elastically support an inward inclined surface of a fitting cap, and the fitting cap is expanded upon unfastening so as to maintain an internal airtightness of a fitting body and allow a detachable structure between the fitting body and the fitting cap to be smoothly implemented.

Abstract: A method of using a mechanical joint restraint includes inserting an end of a pipe length into a gland bore of a gland, a ring bore of a gripping ring, and a gasket bore of a gasket, the gland, the gripping ring, and the gasket together forming the mechanical joint restraint; inserting at least a portion of the gasket of the mechanical joint restraint into a socket of a piping element; inserting the end of the pipe length into the socket of the piping element; and drawing the gland towards a flange of the piping element to compress the gasket into sealing engagement with the piping element and the pipe length.

Abstract: An expansion loop for a piping system. The expansion loop has a first flexible conduit with a first end and a second end and a second flexible conduit with a first end and a second end. A first rigid conduit is connected between the first ends of the first and second flexible conduits. Additional rigid conduits are connected to both of the second ends of the flexible conduits. These additional rigid conduits include a stainless-steel elbow, a conversion conduit, and a copper conduit. The expansion loop may be installed wherein the flexible conduits are bent, when fluid flows, the flexible conduits straighten out and are not bent.

Abstract: A filler tube for a fuel tank, having a tube portion made of plastic material and a tubular adapter, which is connected to the tube portion, for coupling the filler tube to the fuel tank, wherein a lateral surface of the adapter is integrally bonded, in particular welded, to a lateral surface of the tube portion, wherein the adapter and the tube portion overlap in the region of the integrally bonded connection.

Abstract: A gimbal joint includes a monolithic first member including a first connection portion; and a monolithic second member including a second connection portion engaged with the first connection portion such that the monolithic first member and the monolithic second member are configured to move relative to each other about a plurality of axes. The first member may include a plurality of structural portions and a support base. The support base may include an axially-extending aperture that extends through the support base.

Abstract: A pipe-fitting includes a plurality of pipe receiving portions, a hollow joint for connecting the plurality of pipe receiving portions to each other, a sealing member received in a sealing member-receiving groove, and a plurality of hollow fixing-caps, wherein each fixing-cap is screwed to a distal end of each pipe receiving portion to press the sealing member to be brought into close contact with each pipe. A fixing-cap stopper is formed on an outer circumferential face of each pipe receiving portion. The fixing-cap stopper includes a fixing-cap fixing portion including a plurality of fixing protrusions protruding toward a proximal end of the fixing-cap. A plurality of fixing-protrusion-receiving grooves is defined in the proximal end of each fixing-cap for receiving the fixing-protrusions therein respectively.

Abstract: A pipe joint for joining pipe sections via a receiving recess at one end of the first pipe section including a first groove formed in an internal wall of the receiving recess and accessible via a transverse insertion passage, a plurality of axially spaced-apart second grooves formed in an external wall of a connection end of the second pipe section, and an elongate flexible anchoring strip including a plurality of axially spaced-apart anchoring portions placeable in respective ones of the second grooves, wherein, once the first and plurality of second grooves have been brought into alignment upon insertion of the connection end of the second pipe section into the receiving recess, the anchoring strip is inserted from outside the first pipe section into the first groove and plurality of second grooves so as to be seated therein, thereby uniting and axially locking together the first and second pipe sections.

Abstract: A flexible tap tee fitting for attaching a plastic drain pipe to a corrugated plastic drain pipe main of single-wall or double-wall construction. The tap tee fitting has a plurality of elongated tabs, some long and some short, with a circumferential ridge on the ends. The ridge biases the tabs inwardly as the tap tee fitting is pushed through a hole in the main and locks on the inside of main. The long elongated tabs engage the wall of a single-wall main and the short elongated tabs engage the wall of a double-wall main.

Abstract: A stud isolator with integrated nail protection, providing both isolation, and nail protection in a single device, with installation of a single product. Such an isolator includes an insertion body sized and configured for insertion into the stud bore hole. The insertion body includes a faceplate attached to the front end of the insertion body, so as to serve as a stop and attachment point to the stud, when the insertion body is inserted into the stud bore hole. The insertion body includes a hollow channel for receipt of a plumbing pipe extending through the stud bore hole. In addition, either a separate metal boring liner is provided inserted into the bore hole, with the insertion body inserted therein, or a metal nail protection collar is provided received in the insertion body of the isolator. In either case, nail protection is provided to the pipe received within the isolator.

Abstract: A sprinkler configured for engagement with a coupling, the sprinkler including a raised lip end; and a distal end disposed opposite from the raised lip end, the sprinkler defining a raised lip between the distal end and the raised lip end, the sprinkler defining a groove between the raised lip and the distal end.

Abstract: A pipe flange coupling device, which is attachable in connection with a first pipe of a first pipe flange, having pawls engaging a second pipe flange of a second pipe. The pawls are fixed to a spindle retractable by a translation arrangement so as to pull the second pipe flange against the first pipe flange. More particularly, the translation arrangement is configured such that, when the flanged pipes are coupled and the pawls are retracted, a force exerted on the pawls towards the extended position is transmitted via the translation arrangement against a mechanical stopper. Moreover, the translation arrangement is biased such that the translation arrangement must work against this bias in order to extend the pawls and release the flanged pipes coupled to each other.

Abstract: A coupling segment includes a coupling body, the coupling body defining a first end and an opposite second end, the coupling body further defining a first axial end and an opposite second axial end; a leg extending from the first end, the leg defining a proximal end proximate the first end and a distal end distal from the first end, the leg angling from the first axial end to the second axial end, the distal end defining a bearing member, the bearing member defining a planar bearing surface; and a fastener pad extending from the second end.

Abstract: Modular end apparatus, such as modular end fitting apparatus, and methods for flexible hoses, and associated components thereof. In one implementation, a flexible hose apparatus includes a flexible hose and a hose body coupled to the flexible hose, the hose body including a threaded outer surface. The flexible hose apparatus includes a cap including an inner shoulder protruding inwardly relative to a first inner surface of the cap. The flexible hose apparatus also includes a removable end fitting disposed in engagement with the cap. The removable end fitting includes an end body that is monolithic. The end body includes a first end, a second end opposite of the first end, and a first outer shoulder adjacent the first end and disposed between the hose body and the inner shoulder of the cap.

Abstract: A coupling assembly, to be flowed through by fluid, for coupling two components has a coupling element and a ball joint assembly with a female ball joint element, a male ball joint element, and a securing element. The female and male ball joint elements form a ball joint by form fit. The male ball joint element has a ball segment and the female ball joint element has an expandable ball segment. The ball segment of the male ball joint element engages the expandable ball segment so that the female ball joint element at least partially encloses the male ball joint element. The securing element contacts externally an outer contour of the female ball joint element. The coupling element forms one of the female and male ball joint elements. One of the two components forms the other one of the female and male ball joint elements.