Fittings & Valves: Check Valves
Check valves help prevent backflow in pool, spa, and bath plumbing systems by allowing water to move in one direction. These valves are often used near pumps, heaters, filters, chlorinators, and other equipment that can be affected by reverse flow. Browse PVC check valves and related parts designed to protect equipment, support circulation, and maintain reliable plumbing performance.
Waterway Check Valve Lock Ring (718-7021-CPVC)
$19.99 $12.99