... 3, Metal-metal diaphragm. 4, Used in precise analysis instrume H2 single stage pressure regulator TypeInput pressureOutput pressureFlow rateYQJ/YQJF-115Mpa0 ... .5Mpa0.8m3/hYQJ series for non- corrosive Gases such as H2,O2,N2,CO,CH4,HE,NE,AR and etcYQJF series ...