초록 ▼

A plumbing installation is provided which includes an outlet box, at least one water supply pipe extending into the box and a torque inhibiting connection between the pipe and a boiler drain valve positioned in the interior of the box. A compression nut is screwed over a male threaded lower shank of

A plumbing installation is provided which includes an outlet box, at least one water supply pipe extending into the box and a torque inhibiting connection between the pipe and a boiler drain valve positioned in the interior of the box. A compression nut is screwed over a male threaded lower shank of the boiler drain valve to compress a ferrule around the upper end of the water supply pipe. A male threaded cylindrical adapter is connected to, and extends downwardly from, the compression nut through a water supply hole in a bottom wall of the outlet box. The adapter surrounds the water supply pipe. A lock nut is screwed over the adapter and squeezes the bottom wall between the compression nut and the lock nut. When the water supply pipe is made of CPVC this installation prevents lateral movement and/or torquing of the pipe which could weaken or fracture chemical welds between a lower end of the CPVC pipe and a CPVC fitting.

대표청구항 ▼

A plumbing installation, comprising: an outlet box having an outwardly opening interior and a horizontally extending bottom wall with a water supply hole extending therethrough; a water supply pipe made of CPVC having an upper end extending through the water supply hole in the bottom of the outlet b

A plumbing installation, comprising: an outlet box having an outwardly opening interior and a horizontally extending bottom wall with a water supply hole extending therethrough; a water supply pipe made of CPVC having an upper end extending through the water supply hole in the bottom of the outlet box; a boiler drain valve positioned in the interior of the outlet box and having a male straight threaded lower shank in which the upper end of the water supply pipe is seated and a handwheel which may be manually rotated to turn the valve ON and OFF; and means for connecting the water supply pipe to the boiler drain valve to thereby inhibit the transmission of torque to the water supply pipe resulting from rotation of the handwheel including a ferrule surrounding the upper end of the water supply pipe, a compression nut having straight female threads screwed over the male threaded lower shank of the boiler drain valve to compress the ferrule around the upper end of the water supply pipe, a male threaded cylindrical adapter connected to, and extending downwardly from, the compression nut through the water supply hole and surrounding the water supply pipe, and a lock nut screwed over the male threaded cylindrical adapter to squeeze the bottom wall between the compression nut and the lock nut.