... /corrosive gases. 3, Brass/SS316L. 4, Metal-metal diaphragm. pneumatic valve TypeInput pressureOutput pressureFlow rateYQJ/YQJF-115Mpa0.45Mpa0.6m3/hYQJ/YQJF ... /YQJF-615Mpa1.2Mpa0.6m3/hYQJ/YQJF-715Mpa1.5Mpa0.8m3/hYQJ series for non- corrosive Gases such as H2,O2,N2,CO ... ,CH4,HE,NE,AR and etcYQJF series for corrosive Gases such as NH3,SO2,H2S,HCL,NO ...