Pvc swing check valve

Water Pump Foot Valve Black PVC Low Pressure Flat Check Valve for Fluid Machine(2in)

PVC Grey Single Union Check Valve for Water Pipes - Sizes 20 To 63mm

12" DN15 Stainless Steel One Way Swing Check Valve Female Thread WOG 200PSI

Check Valve 1‑Way Telescopic Swing Water Meter Brass Threaded Connection Valve DN25 X 32

PVC Check Valve Swimming Pool Transparent NonReturn Valve Replacement Accessories(V501A )