A compressor includes a discharge conduit that extends between a discharge valve and a hermetic shell within the hermetic shell. A sealing connection assembly includes a housing mounted to one of the discharge valve and the hermetic shell. An inner surface of the housing has a tapered portion that contracts to a sealing edge. An end portion of the discharge conduit is positioned within the passage of the housing such that an outer surface of the discharge conduit is positioned on and contacts the inner surface of the housing at the sealing edge.

A compression-type fitting system for quick connection of two conduits. The system includes a compression body configured to receive a first conduit and a second conduit therein. The system includes a compression lock nut to engage an outer surface of the compression body. Upon tightening, a continuous ring within the compression body facilitates forming a seal between the compression body and the first conduit.

A fitting for use with metallic pipe is disclosed. The fitting includes a body having a connection portion and an opening for receiving an end of the metallic pipe in an insertion direction along a longitudinal axis of the connection portion, a retainer positioned within the connection portion coaxial with the longitudinal axis, the retainer having a plurality of prongs extending radially towards the longitudinal axis, and a gripper positioned within the connection portion coaxial with the longitudinal axis between the retainer and the opening. The gripper is configured as a frusto-conical compression ring tapering towards the opening and has a plurality of gripping projections extending radially towards the longitudinal axis. In operation, the gripper and connection portion cooperate to increase compression on the metallic pipe if the metallic pipe is urged out of the fitting.

A pipe coupling (100) for receiving, holding and releasing a pipe, comprising a coupling body (110) having a bore (B) with a geometric axis (A) into which a pipe can be inserted in a pipe insertion direction (P); a rotatable sleeve (170) which is arranged at least partially around the coupling body (110) and which is rotatable around the axis of the bore with respect to the coupling body (110); a gripping element (140) configured to engage a surface of the pipe; a pipe release element (160) configured to disengage the gripping element (140) from the surface of the pipe upon axial movement of the pipe release element (160); and a release collar (180) coupled to an end of the rotatable sleeve (170). Axial rotation of the rotatable sleeve (170) in a first direction causes the release collar (180) to move axially from a locked position to an unlocked position and wherein in the unlocked position, the release collar (180) can be moved axially in a pipe insertion direction (P) to cause the pipe release element (160) to disengage the gripping element (140) from the surface of the pipe.

Disclosed is a sealing arrangement (10) for producing a sealing function in an, in particular static, pipe connection, in particular between a fluid-carrying pipe (11) and a connection sleeve (12). The sealing arrangement (10) comprises a ring seal (20) arranged in a circumferential groove (121), a seal seat (30) and a clamping element (40) for clamping the ring seal (20). The sealing arrangement (10) has a pressure side. The seal seat (30) is arranged in the circumferential groove (121) on the pressure side and has overflow openings (31) so that the ring seal (20) is exposed to the pressure of the fluid on the pressure side. Additionally or alternatively the seal seat (30) is arranged in the circumferential groove (121) and is configured to be conically tapering in the direction of the pressure side so that by clamping the ring seal (20) this is compressed in a radial direction, wherein the circumferential groove (121) remains accessible on the pressure side.

An apparatus (10) for coupling with a pipe (12), the apparatus (10) including a body assembly (13) having a body (14) adapted to fit with the pipe (12), and at least two gripping parts (16) moveably coupled to the body (14), the at least two gripping parts (16) being adapted to be moveable between an insertion condition, in which the gripping parts (16) are resiliently depressible to allow movement of the pipe (12) in a first insertion direction, and a gripping condition in which the gripping parts (16) each engage with opposing side walls (18) of the pipe (12) to restrict movement of the pipe (12) in a second opposing direction thereby coupling the apparatus (10) and the pipe (12).

A compression coupler assembly including a first compression nut, a second compression nut threadably attached to the first compression nut and an inner sleeve configured to be captured between the first compression nut and the second compression nut when threaded together. The inner sleeve including a tubular-shaped body with a longitudinal slit extending through a wall of the body between opposite ends of the body. An inwardly slopped flange is formed at each end. Each inwardly slopped flange configured to deflect inwardly as the first compression nut and the second compression nut are threaded to a predetermined position. At least one stop protrudes inwardly from an inner wall of the inner sleeve.

A connection socket for a tubular connection includes a socket cup having a metal alloy composition and a sealing portion. A primary seal is positioned within the sealing portion. The primary seal includes an elastomeric material having a service temperature. One or more spacer rings are positioned within the sealing portion. A secondary seal is positioned within the sealing portion. The secondary seal includes a metal composition, wherein the secondary seal has a melting temperature at or above the service temperature of the primary seal. One or more locking rings are positioned within the sealing portion, wherein each of the one or more locking rings comprises a biting feature defined along an internal circumference of the locking ring.

A fitting for a pipe includes a cylindrical sleeve including at least one observation through window, a spigot disposed concentrically within the cylindrical sleeve and having an outer surface sized to fit within a proximal end of the pipe, wherein the cylindrical sleeve is movable with respect to the spigot in a proximal direction to a sealed position and a locking assembly interposed between the cylindrical sleeve and the spigot to lock the cylindrical sleeve to the spigot in the sealed position. The at least one observation through window provides a view of at least a portion of the locking assembly to determine whether the cylindrical sleeve is locked in the sealed position.

A second part extending around a first part in a plugged-together state. The second part has snap-in element with an inwardly protruding projection for meshing with a complementary recess on an outer surface of the first part to hold the second part fixed in the axial direction on the first part. Both parts have a central passage opening. One part has an end area expanding towards the outlet opening in a connection area, and the other part is connected to an elastic section, arranged in its interior. The front end of the elastic section is pressed into contact with the expanded end area of the opposite part. The projection of the snap-in element maintains the first and second parts meshed together, so that the elastic section exerts a sealing function due to the pressure on the expanding end area.