CMP 25830-200-000 - HydroSeal Spring Check ValveCMP 25830 200 000 HydroSeal Spring Check Valve is a standard serviceable black CPVC check valve designed to maintain one way water flow in pool and spa plumbing systems. It features a 2 inch socket x 2. 5 inch spigot connection, a 2 pound spring, and a clear lid with lock nut for easy inspection and routine service. Key Features: Standard black CPVC design 2 inch socket x 2. 5 inch spigot 2 pound spring check valve Serviceable clear lid with lock nut