PRESSURE REGULATING AND SHUT-OFF VALVE

摘要

A valve which is part of a quick release coupling for use in an opening in the neck of a gas cylinder which does not obstruct a clear passage along the axis of the cylinder including a first valve member (80) fixedly and outwardly disposed into the opening in a sealing manner; a second valve member (73) movably and inwardly disposed in the opening, one of the valve members (73) forming a valve seat surface and the other (80) a sealing edge, and a spring (78) acting against and biasing the second member (73) against said first member (80). In a preferred arrangement the valve embodies a pressure regulator.