Polypropylene Check Valve with Viton® Diaphragm 3/8" HB x 1/4" MPT

Highly reliable check valve allows superior flexibility when backflow protection is critical in vacuum, gas, or liquid systems. Diaphragm is constructed of Viton material and offers excellent high-temperature performance. Resistant to a wide range of chemicals, the diaphragm maintains its flexibility and shape as well as mechanical properties. Free-floating diaphragm is able to detect the slightest change in pressure and offers a very rapid response time between free-flow and no-flow conditions. Polypropylene housing.