A coupling may be configured to receive and secure an insertion end of a conduit. An outer surface of the insertion end of the conduit may be smooth and free of grooves, flanges and beads. A first member of the coupling may define a first passageway. A second member of the coupling may define a second passageway. The first member may be in spin weld engagement with the second member. A gripping ring having an inner edge defining a series of teeth may be disposed within the second member. A support ring and O-ring may also be disposed within the second member.

A coupling may be configured to receive and secure an insertion end of a conduit. An outer surface of the insertion end of the conduit may be smooth and free of grooves, flanges and beads. A first member of the coupling may define a first passageway. A second member of the coupling may define a second passageway. The first member may be in spin weld engagement with the second member. A gripping ring having an inner edge defining a series of teeth may be disposed within the second member. A support ring and O-ring may also be disposed within the second member.

An assembly includes a tubular inlet riser to be mounted within a toilet tank. The tubular inlet riser further includes an inner water bore, a bottom-most portion having an outer threaded portion, and a bottom seat. The assembly further includes a half cartridge adapter, which includes a cylindrical upper tube stop cavity, a cylindrical medial O-ring cavity, and a cylindrical lower cartridge cavity.

An assembly includes a tubular inlet riser to be mounted within a toilet tank. The tubular inlet riser further includes an inner water bore, a bottom-most portion having an outer threaded portion, and a bottom seat. The assembly further includes a half cartridge adapter, which includes a cylindrical upper tube stop cavity, a cylindrical medial O-ring cavity, and a cylindrical lower cartridge cavity.

A sanitary line attachment (1) is provided which is of sleeve-shaped design in at least one front end region (6) and, in the sleeve interior of the sleeve-shaped front end region (6), bears an internal thread (7) for attachment to an adjacent line portion, wherein at least one sealing ring (9) is clamped in a sealing manner between the adjacent line portion and the line attachment. On the ring outer circumference of the sealing ring at least one holding projection (10) protrudes, which holding projection (10) engages in the internal thread (7) in the sleeve interior of the sleeve-shaped front end region (6). The sealing ring (9) is produced from a dimensionally stable and/or inelastic material, and the sealing ring (9) has at least one and preferably at least two indentations (11) which are arranged at a distance from one another on the ring inner circumference and are designed as tool engagement surfaces.

A tube seal includes a cylindrical tube and an elastomeric seal body molded to the cylindrical tube. The elastomeric seal body includes a pair of seal lip regions extending from opposite ends of the rigid cylindrical tube and inserted into a respective bore of a pair of opposing members for providing a sealing relationship there between. The seal lip regions each include, in an unassembled condition, an axially extending seal lip and a radially outwardly extending seal lip connected to the ends of the rigid cylindrical tube by an elastomeric hinge region.

Embodiments of a portable verification system can move from one in-field gas flow meter location to another and temporarily connect downstream of a main pipeline's meter run or station. A control valve of the portable verification system allows volume measurement at different flow velocities to be verified. In some embodiments, the portable verification system is connected to the meter run and the main pipeline by an adjustable pipeline section. This section can extend horizontally and vertically, as well as swivel to provide versatility when connecting in the field. Adaptor fittings having one flange sized for and fitted to the inlet and outlet ends of the portable verification system and another flange sized for the meter run or main pipeline connection provide additional versatility. Downtime is limited to the time required to complete a circuit between the meter run, portable verification system, and main pipeline.

A coupler for connecting a first fluid conveying member and a second fluid conveying member includes a first coupler half, a second coupler half, and a conductive gasket. In embodiments, at least one of the first coupler half and the second coupler half include an annular groove configured to receive at least a portion of the conductive gasket; the conductive gasket comprises non-metallic material, the first coupler half and the second coupler half are configured to connect and circumferentially surround portions of said first and second fluid conveying members, and the conductive gasket provides a portion of a conductivity path from a first end of the coupler to a second end of the coupler, and may be part of a conductivity path from a first fluid conveying member to a second fluid conveying member. Embodiments of a non-metallic conductive gasket and methods of making a coupler assembly are also disclosed.

A coupler for connecting a first fluid conveying member and a second fluid conveying member includes a first coupler half, a second coupler half, and a conductive gasket. In embodiments, at least one of the first coupler half and the second coupler half include an annular groove configured to receive at least a portion of the conductive gasket; the conductive gasket comprises non-metallic material, the first coupler half and the second coupler half are configured to connect and circumferentially surround portions of said first and second fluid conveying members, and the conductive gasket provides a portion of a conductivity path from a first end of the coupler to a second end of the coupler, and may be part of a conductivity path from a first fluid conveying member to a second fluid conveying member. Embodiments of a non-metallic conductive gasket and methods of making a coupler assembly are also disclosed.

The invention relates to a rotating joint for transferring a first fluid, comprising a male member and a female member which are mounted movably in relation to each other and concentric, and one or more annular seals accommodated inside cavities arranged in the female member and optionally pressurized by means of an insulation fluid. The invention also relates to a fluid transfer system comprising one or more rotating joints according to the invention.