A connection between a first tubular member and a second tubular member includes a first tubular end, a second tubular end, a load shoulder member threadable onto the first tubular end, and a nut receivable around the first tubular end and the load shoulder member and threadable onto the second tubular end. The connection also includes a keyway through the load shoulder member and into the first tubular end to receive a key member.

A conduit assembly of a gravity separation device having specialized joint structure for mating first and second conduits to permit easier removal of the first conduit. The first conduit may include a snout having a tube and a collar positioned at an end of the tube. The collar may include a flange extending outward from a center of the tube. The second conduit may have a main body and a saddle at an end of the main body. The saddle may include a track shaped to receive the flange of the collar of the first conduit. The saddle may also have a resiliently separable gateway comprising two opposing projections configured for receiving therebetween and partially enclosing the tube of the snout.

An electrical submersible pump assembly has modules including a pump, a motor, and a pressure equalizer. A first adapter having threads is mounted to one of the modules. A second adapter is mounted to an adjacent one of the modules, the second adapter having a tubular body, a neck, and an external shoulder at a base of the neck. A collar is rotatably carried on the neck and in threaded engagement with the threads of the first adapter. A clamp secures around the neck between the external shoulder and the collar after the collar is fully engaged with the threads on the first adapter. A pair of flanges are mounted to and extend outward from the clamp. A motor lead locates between the flanges.

A hydraulic tube for a vehicle may include a pipe having a pipe rib which may be formed integrally on and protrudes outward from a terminal end of the pipe, a connector fitted around the pipe such that the pipe extends through opposite ends of the connector, and a sealer fitted into a first end of the connector, a first end of the sealer being coupled with the terminal end of the pipe through coupling with the pipe rib, and a second end of the sealer being coupled with the first end of the connector.

A pipe connecting device configured to connect at least two pipes, comprises a pipe including a catching ledge at a connecting end portion thereof and made of stainless steel or copper; a first connecting member formed in a cylindrical shape and having a spring seating portion on which a circular plate spring is seated, a pipe through-hole through which the pipe passes, and a screw recess provided inside the first connecting member; and a second connecting member provided with an o-ring seating portion on which an o-ring is seated at a side at which the pipe is coupled and an outer surface having a screw thread, wherein a through-portion having the same inner diameter as the pipe is formed in the second connecting member.

A clamp assembly includes a rail configured to receive a first fluidic assembly, and a carriage slidably mounted to the rail and configured to receive a second fluidic assembly. The carriage is operable to establish a first fluid tight seal between the first fluidic assembly and a chromatography column received within the claim assembly, and to establish a second fluid tight seal between the second fluidic assembly and the chromatography column.

A clamp assembly includes a rail configured to receive a first fluidic assembly, and a carriage slidably mounted to the rail and configured to receive a second fluidic assembly. The carriage is operable to establish a first fluid tight seal between the first fluidic assembly and a chromatography column received within the claim assembly, and to establish a second fluid tight seal between the second fluidic assembly and the chromatography column.

An annular sealing material seals a pipe joint between a socket and a spigot. The sealing material includes a bulb part which is composed of a first bulb, a second bulb located closer to the inner side of the socket than the first bulb, and a narrow part present between the first and second bulbs. The first bulb is pressed against the inner circumferential surface of the socket. The second bulb is pressed against the outer peripheral surface of the spigot. The second bulb is inclined towards the pipe center from the first bulb in a natural state before it is provided between the socket and the spigot. The inner diameter of the second bulb is smaller than the outer diameter of the spigot in the natural state. The second bulb is extensible in the pipe diameter direction due to elastic deformation of the narrow part.

A separation preventing device that prevents separation of a fluid pipe in a pipe axis direction, includes a main body externally fitted to an outer peripheral surface of the fluid pipe and has a recess portion facing the outer peripheral surface; a locking member housed in the recess portion in a tiltable manner and is able to bite into the outer peripheral surface of the fluid pipe; a pressing member provided in the main body member and presses the locking member so as to bite into the outer peripheral surface of the fluid pipe; and an interposition member interposed between the locking member and the pressing member, wherein the interposition member is equipped with a tapered surface coming into contact with an outer surface of the locking member, and is housed in the recess portion in a state of having an acceptable movement value of a predetermined width in the pipe axis direction of the fluid pipe.

In one exemplary embodiment of the present disclosure a fluid coupling assembly defining an axial direction, a radial direction, and a circumferential direction is provided. The fluid coupling assembly includes a male coupling including a first MC attachment interface, a second MC attachment interface, and an outer surface extending along the circumferential direction; a ferrule coupling including an FC attachment interface pressed against the first MC attachment interface, a lip extending along the radial direction, and an outer surface extending along the circumferential direction to define a circular shape; and a nut coupling including an NC attachment interface rotatably engaged with the second MC attachment interface, a flange extending along the radial direction and pressed against the lip of the ferrule coupling, and an inner surface extending along the circumferential direction to define a circular shape; wherein the outer surface of the male coupling, the outer surface of the ferrule, or the inner surface of the nut coupling includes a plurality of non-resilient protrusions spaced along the circumferential direction for contacting an opposing surface and increasing a loosening resistance of the fluid coupling assembly.