SYWAN 4 Pcs 10mm 3/8 inch Inline ABS One Way Water Non Return Check Valve for Fuel Gas Liquid Air

/8" Inline ABS one way water non return check valve for drinking fountains, miniature check valve, medical stop valve. Specifications: Shell material: ABS resin  Diaphragm material: silicon rubber  Diameter: 10mm/0.39 inch  Total length: 43mm/1.69 inch  Opening pressure: ?0.5 Kpa  Maximum back pressure: ?0.3 Mpa ?Medical grade material, safe and nontoxic.  ?Under 25 Degrees Celsius ~ 60 Degrees Celsius environment is normal performance, and has good form ability. ?Used in fluid system to prevent reverse flow flow, or used in pneumatic system to prevent reverse flow of compressed air. Material characteristics:   ---Valve material --- ABS: It has very good cold resistance and can be used in cold environments for a long time. Chemically resistant to glycerin, inorganic salts, bases, polyamino acids, most alcohols and hydrocarbons; resistant to weak acids, but not to strong acids, ketones, aldehydes, esters and chlorinated hydrocarbons. ---Sealing material --- Silicone: High adsorption properties, thermal stability, chemical stability, has high mechanical strength, etc package included: 4 * Valve