A hose connector 106 for a cartridge-operated fire extinguisher 100, the hose connector 106 including: a valve body connection tube 330 for connecting the hose connector 106 to a valve body of the fire extinguisher 100, the valve body connection tube 330 is non-threaded; a hose connection tube 332 for connecting a hose to the hose connector 106; and a fixing plate 334 for fixing the hose connector 106 to the valve body of the fire extinguisher 100.

A hose connector 106 for a cartridge-operated fire extinguisher 100, the hose connector 106 including: a valve body connection tube 330 for connecting the hose connector 106 to a valve body of the fire extinguisher 100, the valve body connection tube 330 is non-threaded; a hose connection tube 332 for connecting a hose to the hose connector 106; and a fixing plate 334 for fixing the hose connector 106 to the valve body of the fire extinguisher 100.

A plug having a longitudinal axis includes a plug body having a generally flat sealing surface on an axial end thereof, and a protuberance extending from the axial end generally concentric with the longitudinal axis. The protuberance has a first section contiguous with the plug body, and a second section having a hub portion contiguous with the first section and a plurality of generally evenly spaced arms extending outward from the hub portion. An underside surface of each arm faces the sealing surface of the plug body and has a generally flat portion and a ramped nub thereon projecting toward the sealing surface. The plug may be inserted into a compatible socket having tabs and rotated about the longitudinal axis for sealable engagement with the socket.

A plug having a longitudinal axis includes a plug body having a generally flat sealing surface on an axial end thereof, and a protuberance extending from the axial end generally concentric with the longitudinal axis. The protuberance has a first section contiguous with the plug body, and a second section having a hub portion contiguous with the first section and a plurality of generally evenly spaced arms extending outward from the hub portion. An underside surface of each arm faces the sealing surface of the plug body and has a generally flat portion and a ramped nub thereon projecting toward the sealing surface. The plug may be inserted into a compatible socket having tabs and rotated about the longitudinal axis for sealable engagement with the socket.

A fitting or connector for use in constructing a tubing assembly is made by bonding an olefin gasket to an end face of a polypropylene fitting member. The gasket is bonded to the fitting member via a heat fusion technique that causes localized melting together of the gasket and the fitting and generates a composite fitting or connector.

A multi-part connector assembly is provided which realises a compact snap coupling between a hose (40) and a pipe socket (50) with only a single potential leaking position and requiring only a minimum number of parts: a first retaining member (10), a second retaining member (20) and a sealing element (30) sandwiched therebetween in the axial direction of the connector assembly.

A multi-part connector assembly is provided which realises a compact snap coupling between a hose (40) and a pipe socket (50) with only a single potential leaking position and requiring only a minimum number of parts: a first retaining member (10), a second retaining member (20) and a sealing element (30) sandwiched therebetween in the axial direction of the connector assembly.

A connector has an outer surface for engagement by a hose, an inner through-bore (13) for receiving a pipe nipple to be connected to the hose, and a sealing O-ring (12) for sealing the hose to the pipe nipple. Up to the final assembly of the connector, a plug (15) is placed in the through-bore (13) to hold the parts of the connector together and protect its interior against the entry of dirt. The plug (15) has a shaft (16) to be inserted into the through-bore (13) and an end disc (17) for closing an end of the through-bore (13). A plurality of connectors may be linked together to form a belt-type arrangement for handling in an automatic assembly line.

A connector has an outer surface for engagement by a hose, an inner through-bore (13) for receiving a pipe nipple to be connected to the hose, and a sealing O-ring (12) for sealing the hose to the pipe nipple. Up to the final assembly of the connector, a plug (15) is placed in the through-bore (13) to hold the parts of the connector together and protect its interior against the entry of dirt. The plug (15) has a shaft (16) to be inserted into the through-bore (13) and an end disc (17) for closing an end of the through-bore (13). A plurality of connectors may be linked together to form a belt-type arrangement for handling in an automatic assembly line.

A universal coupling for hydraulic hose wherein the coupling has a male coupling which is constituted by a shank and a universal male part; and a female coupling having a universal nut compatible with the universal male coupling and wherein the universal nut has an internal universal thread and a turning up to the middle of the part in its external part which it is tightened to a piece having two ends or tips, where, the first tip has a turning and an external grooved element forming between them a box housing the nut and the second tip has a terminal head of standard and variable shape, where the terminal head joins the first tip through a segment.