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There are two categories of stainless steel check valve : Flanged and Threaded -
There are two types of cast iron check valve : Flanged and Wafer -
There are three types of ductile iron check valve: Flanged, Threaded, and Wafer -
Spring check valve has a spring loaded stopper pressed against a valve seat. When enough pressure is applied against it, the spring contracts, allowing some fluids to pass. Spring check valves are installed vertically. They are commonly used with pumps -
Check valves are installed horizontally. It is commonly used with pipes. -
There are 3 series of KITZ brass check valve: R, F and RFKITZ R brass check valve: applicable with water usage, usually installed horizontallyKITZ F brass steam check valve: applicable with steam usageKITZ RF brass spring check valve: applicable with water usage, installed vertically
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