General description High Quality - Made of high quality ABS resin with silicone rubber diaphragm, this check valve is durable, stable, acid and alkali resistant for long-term use. It can be used to prevent backflow of fluid or compressed air. Technical specifications Material: ABS resin with silicone rubber diaphragm Temperature range: 77 F to 140 F Size: 10mm (3/8') Quantity: 2 pieces Design Pagoda-shaped card slot design for firm fixation without leakage Usage Widely used in automobile, machinery, household, agriculture, etc.