Suitable Medium ：
Oil,Water,Sour and Surlphur Liquid etc.
Construction and use
H74I,II type wafer round
check valves prodeuced by this factory are a kind of ultrathin check valve,having
these features such as simple structure,nice outline, light weight,convenient
to install etc.it is mainly applied in the industries such as water-supply
system,petroleum,chemical industry,metallurgy etc.and specially on limited