Patent ID: 8251347
Filing Date: 2012-08-28
Classification: F16K

Abstract:
1. A high pressure diaphragm gas valve comprising: a valve body with a valve chamber of generally cylindrical configuration therein, said valve chamber having a first end and a second end that is axially spaced from said first end, and a nozzle axially protruding from said first end into said valve chamber, wherein a first gas port is arranged in a front face of said nozzle and a second gas port is arranged in said first end laterally of said nozzle; a seat assembly removably fitted in said first end of said valve chamber, said seat assembly including: a diaphragm sealing off said second end of said valve chamber, wherein said diaphragm has a central sealing surface and an outer rim in sealing engagement with said peripheral sealing means of said seat assembly; and means for pressing said central sealing surface of said diaphragm onto said seat surface of said seat assembly; said mounting ring is supported with its inner ring flange on said nozzle shoulder surface and with its outer ring flange on said outer shoulder surface, so that said at least one peripheral gas passage opens into said ring channel.