This line of diaphragm check valves can be used for air, inert gases, and liquids. They are sensitive to pressure differentials as low as ½ PSI and may be cycled as often as every second. Three different housing materials are available consisting of Nylon, Polypropylene and PVDF. Each unit can be constructed with diaphragms of fluorosilicone, viton, EPDM or epichlohydrin. Available for tubing sizes for 1/8, 3/16, ¼ and 5/16 and 3/8. Used in medical devices, analyzers, pumps and dispensing applications.