1/2/3/4/5/6mm Inline Plastic Check Valve 1/16 3/32 1/8 3/16 inch in Hose Barb
Material: Housing (PP – Polypropylene), Seal (Fluororubber), Spring (Stainless Steel). The plastic check valve allows the flow in only one direction. There is a small spring inside therefore it needs a little pressure to open the valve for flow.