A double containment fitting for connection to a double containment tubing system with an outer, secondary containment tubing surrounding an inner, primary tubing. The fitting includes a fitting body defining a central passageway, the fitting body having a center portion disposed between opposed first and second body ports. The fitting body is configured to receive the tubing system into the first body port. The central passageway has a diameter in the first port selected to allow the secondary tubing into the first body port. A connection system mechanically secures the secondary tubing to the first body port.

A connector (10) or kit of parts facilitates sealingly inserting a plumbing member (211) into a gap (250) created in an existing pipeline (200). The connector (10) comprises a bridging sleeve (12; 212), a first sealing device (14; 214), a second sealing device (16; 216), a first sealing element (18; 218), and a second sealing element (20; 220). In use, the first sealing device (14; 214) is adapted to form a first seal between a bridging sleeve (12; 212) first tubular section internal surface and an existing pipeline external surface (252, 254) by compression of the first sealing element (18; 218) and the second sealing device (16; 216) is adapted to form a second seal between a plumbing member internal surface and a bridging sleeve second tubular section external surface (24) by compression of the second sealing element (20; 220).

A structure for coupling a faucet or a similar device includes: a faucet with a connecting pipe portion extending there-from; a connecting body with an annular coupling portion formed at one end and connected to a liquid supply source to discharge liquid through the faucet; a fastening nut screw-coupled to the annular coupling portion; a pressing ring coupled to the connecting pipe portion; and a grab ring configured to grab an outer circumference of the connecting pipe portion to have the connecting pipe portion not to be detached from the coupling portion. The fastening nut can be detached from the coupling portion by rotating the faucet and the connecting pipe portion with the engaging configurations of the pressing ring and the fastening nut in engaged position, and an angular position of the faucet can be adjusted to a preferred position in assembly by rotating the faucet and with the engaging configurations of the pressing ring and the fastening nut in disengaged position.

A double containment fitting for connection to a double containment tubing system with an outer, secondary containment tubing surrounding an inner, primary tubing. The fitting includes a fitting body defining a central passageway, the fitting body having a center portion disposed between opposed first and second body ports. The fitting body is configured to receive the tubing system into the first body port. The central passageway has a diameter in the first port selected to allow the secondary tubing into the first body port. A connection system mechanically secures the secondary tubing to the first body port.

The present invention provides a faucet coupling structure capable of enabling a user to complete the faucet installation by simply inserting the faucet instead of rotating to tighten the faucet, and enabling the user to separate the faucet by holding and rotating the faucet by hand. The user can conveniently install the faucet while adjusting the angular orientation of the faucet to a desired angle. The user can install the faucet by holding and inserting the faucet by hand, and can also separate the faucet by holding and rotating the faucet by hand. As a result, the user can install and separate the faucet without using a tool.

An adapter assembly fitting an engine coolant system to covert the system to accept a threaded high pressure coolant line in place of the rubber hose, the adapter securing to each coolant line connections, including the upper and lower radiator necks, the necks on the water pumps and the neck generally leading to the intake manifold. These adaptors connect to each neck, allowing for further connection to the high pressure threaded hoses used in high compression engines or for those automobile owners who wish to upgrade to a more aesthetic appearance of the engine compartment. The adaptor assembly comprises a circular composite band, a body having a fluid channel, a split ring washer and a compression ring which attach to each neck in a manner to seal the adapter to the neck.

A compression coupling includes a sealing joint for sealingly coupling a pipe to the compression coupling and a restraining joint separate from the sealing joint for restraining the pipe to the compression coupling.

A connector (10) or kit of parts facilitates sealingly inserting a plumbing member (211) into a gap (250) created in an existing pipeline (200). The connector (10) comprises a bridging sleeve (12; 212), a first sealing device (14; 214), a second sealing device (16; 216), a first sealing element (18; 218), and a second sealing element (20; 220). In use, the first sealing device (14; 214) is adapted to form a first seal between a bridging sleeve (12; 212) first tubular section internal surface and an existing pipeline external surface (252, 254) by compression of the first sealing element (18; 218) and the second sealing device (16; 216) is adapted to form a second seal between a plumbing member internal surface and a bridging sleeve second tubular section external surface (24) by compression of the second sealing element (20; 220).

An adapter assembly fitting an engine coolant system to covert the system to accept a threaded high pressure coolant line in place of the rubber hose, the adapter securing to each coolant line connections, including the upper and lower radiator necks, the necks on the water pumps and the neck generally leading to the intake manifold. These adaptors connect to each neck, allowing for further connection to the high pressure threaded hoses used in high compression engines or for those automobile owners who wish to upgrade to a more aesthetic appearance of the engine compartment. The adaptor assembly comprises a circular composite band , a body having a fluid channel, a split ring washer and a compression ring which attach to each neck in a manner to seal the adapter to the neck.

A double containment fitting for connection to a double containment tubing system with an outer, secondary containment tubing surrounding an inner, primary tubing. The fitting includes a fitting body defining a central passageway, the fitting body having a center portion disposed between opposed first and second body ports. The fitting body is configured to receive the tubing system into the first body port. The central passageway has a diameter in the first port selected to allow the secondary tubing into the first body port. A connection system mechanically secures the secondary tubing to the first body port.