Drillpro Check Valve Inline Check Valve Fuel Diesel Gas Liquid Air One Way Non Return Shell material: ABS resin, Diaphragm material: silicon rubber Diameter: 10mm, Total length: 43mm Medical grade material, safe and nontoxic; Strong resistance to acid, alkali, salt corrosion ability; Under 25  ~ 60  environment is normal performance, and has good formability.