Waterco Filter/Valve Air Release w/O-Ring (620221) mpindustries The 25591-240-000 is a practical

The 25591-240-000 is a practical service part when a compatible Poly Jet needs an internal to restore dependable massage-jet performance

The Viton seal material

Excellent choice for repair

this diffuser helps restore dependable wet-end performance and contributes to a more confidence-inspiring repair overall

Waterco Filter/Valve Air Release w/O-Ring (620221) mpindustries The 25591-240-000 is a practicalThe Waterco filter and valve air release with O ring is designed for compatible systems where controlled release of trapped air is needed as part of normal filter or valve service. An air release component is useful because it helps manage air buildup and supports smoother system startup or maintenance procedures. This replacement is especially useful when the original air release is leaking, sticking, or no longer sealing correctly around the O ring