Gas valve e.g. pneumatic driven control valve for use in e.g. medical oxygen application, has gas inlet and outlet inclined to assure better flow of gas by orienting flow of gas to seat, and upper and lower bodies with decompression throats

摘要

The gas valve has a gas inlet and outlet (3) inclined with each other to assure better flow of gas by orienting flow of the gas towards a seat. An upper body (1) and a lower body (2) of the valve have decompression throats (4) placed between a chamber (8) and a double joint sealing system (6) to attenuate adiabatic compression effect on the system during brutal arrival of gas in the valve. Double sealing between one of the bodies and a valve stem is realized by the system. The joints are integrated in a removable cartridge to facilitate periodic checking and replacement of the valve.