Abstract

A water hammer arrestor and drain trap primer valve includes a hollow pipe having a closed end, a discharging end, an inlet, an outlet port connected to the discharging end and attachable to plumbing tubing, an inlet port connected to the inlet and attachable t plumbing tubing and an insert plug within the pipe positioned at the discharging end and at the inlet. The insert plug is substantiall tubular with opposing flats, and has a longitudinal cylindrical bore and a latitudinal threaded through bore. A port bolt, substantiall tubular and having a longitudinal cylindrical bore and a latitudinal through bore distributor aligned with the insert plug longitudinal cylindrical bore. A check piston within the pipe is slidingly engageable with the insert plug and the outlet port wherein the check piston engages slidably responsive to water pressure changes at the inlet port.

IPC Classes  ?

• E03C 1/296 - Odour seals with provisions against loss of water lock using water-supply valves
• F16L 55/04 - Devices damping pulsations or vibrations in fluids