A plumbing fitting assembly includes an anchor member for being received in a transverse hole in a structure. One end of the anchor member is externally threaded and the other includes a catch portion for engaging a surface of the structure adjacent the hole. The threaded end is threaded into a clamping member configured to form a seal with the opposite surface of the structure or another liquid conveying structure. The anchor member can include a tool formation for mating with a rotating structure of a tool. The assembly can include a lock ring for being lockingly received in an interior passage to prevent the catch portion from deflecting inwardly when installed. The plumbing fitting assembly can also be configured for forming a plumbing fitting at a transverse hole in a flexible, liquid-impermeable panel.

An insertion probe adapter for fluid sample extraction from a pipeline for mounting of an overlying housing element is illustrated and described. The invention permits disengagement of an insertion probe from the body of the probe adapter without disassembling the body from the pipeline and without disassembling the overlying housing element from the body.

An insertion probe adapter for fluid sample extraction from a pipeline for mounting of an overlying housing element is illustrated and described. The invention permits disengagement of an insertion probe from the body of the probe adapter without disassembling the body from the pipeline and without disassembling the overlying housing element from the body.

A gasket includes a thick portion providing a first face seal and a thin portion providing a second face seal. A fluid coupling has an annular gasket housing recess that includes a wide portion for housing the thick portion of the gasket and a narrow portion for housing the thin portion of the gasket.

A fitting assembly for establishing a fluid-tight connection with a pipe, the pipe having an aperture in a sidewall thereof, an inner surface, and an outer surface. The assembly comprises at least one adapting member, an internal sealing member disposed about the adapting member adjacent a distal end thereof, compression member disposed about the adapting member adjacent a proximal end thereof, and an external sealing member disposed about the adapting member between the internal sealing member and compression member. The distal end of the adapting member comprises teeth with outwardly extending flanged ends for insertion in the pipe aperture. Operation of the compression member causes the components to exert a compressive force on the sidewall of the pipe, forming the seal.

A fitting assembly for establishing a fluid-tight connection with a pipe, the pipe having an aperture in a sidewall thereof, an inner surface, and an outer surface. The assembly comprises at least one adapting member, an internal sealing member disposed about the adapting member adjacent a distal end thereof, compression member disposed about the adapting member adjacent a proximal end thereof, and an external sealing member disposed about the adapting member between the internal sealing member and compression member. The distal end of the adapting member comprises teeth with outwardly extending flanged ends for insertion in the pipe aperture. Operation of the compression member causes the components to exert a compressive force on the sidewall of the pipe, forming the seal.

Proposed is a sprinkler coupling structure, including a reducing nipple configured to penetrate a through hole formed in a ceiling panel and manufactured integrally with a flexible pipe body whose upper side is connected from a water supply source and into which fire extinguishing water flows, a head coupled to a lower end of the reducing nipple and configured to spray the fire extinguishing water supplied from the water supply source through the reducing nipple, a nipple fixing means configured to fix and couple the reducing nipple to the ceiling panel so that a height at which the reducing nipple protrudes from the ceiling panel is adjusted, and a head protection net configured to protect the head from under the ceiling panel.

Proposed is a sprinkler coupling structure, including a reducing nipple configured to penetrate a through hole formed in a ceiling panel and manufactured integrally with a flexible pipe body whose upper side is connected from a water supply source and into which fire extinguishing water flows, a head coupled to a lower end of the reducing nipple and configured to spray the fire extinguishing water supplied from the water supply source through the reducing nipple, a nipple fixing means configured to fix and couple the reducing nipple to the ceiling panel so that a height at which the reducing nipple protrudes from the ceiling panel is adjusted, and a head protection net configured to protect the head from under the ceiling panel.

An outlet fitting broadly comprises a coupler, a plug, and a gasket. The coupler engages a conduit opening of a conduit and includes an aft section, a forward section, and a radially extending flange bisecting the aft and forward sections. The aft section includes a narrowing inner surface forming a fluid passageway. The flange includes an upper surface for abutting the conduit near the conduit opening. The plug has a laterally elongated longitudinally extending central aperture. The aft section is inserted into the conduit opening and a tool inserted into the central aperture draws the plug towards the forward section and expands the aft section into secure engagement with the conduit. The gasket is also urged against the periphery of the conduit opening and forms a seal between the coupler and the conduit.