Hayward Low Nox Exhaust Side Gasket Kit (FDXLGSK1931) dialvalves An impeller like this is

An impeller like this is useful because it provides the primary water-moving action inside the pump

Helps restore dependable heating performance

Helps improve engagement during part removal

or no longer sealing or moving correctly inside the valve

Hayward Low Nox Exhaust Side Gasket Kit (FDXLGSK1931) dialvalves An impeller like this isThe Hayward exhaust side gasket kit is designed for compatible Low NOx heater applications where the sealing components on the exhaust side need renewal. A kit like this is useful because it helps restore sealing at key exhaust related joints, supporting cleaner assembly integrity and more dependable service results. This replacement is especially useful when the original gaskets are brittle, compressed, cracked, or no longer sealing confidently after