Valterra 200-C15 1-1/2 in Clear Slip x Slip Swing-Spring Check Valve

Stop backflow in 1-1/2" PVC pool and spa plumbing with the Valterra 200-C15 swing/spring combo check valve (slip x slip). It pairs a flapper with a light 1/2-lb spring to keep one-way flow steady at low rates without adding much resistance. The clear PVC body lets you verify operation at a glance, and the solvent-weld sockets make swaps into existing lines straightforward.