BodyCast Iron / S. G. Iron / Ductile Iron / WCB / CF8 / CF8M
PistonS. S. 304 / S. S. 316
PlugS. S. 304 / S. S. 316
SpringS. S. 304
MediaAir / Water / Steam / Gas & Oil ect.
FeaturesIt primarily matches up with the minimum working pressure inside the tap water pipe, balancing up-stream and down-stream pressure during normalcy and emergency, and maintains constant pressure