and then thread the screws into the housing until they contact the internal piston

verify that the control board is delivering 120 VAC to the harness during the ignition trial

Direct Fit: Simplifies field repairs with precise dimensions for rapid installation within the actuator housing

ensuring seamless compatibility with factory gas lines

Factory Calibrated: Set at -0

Raypak 005891F O Ring and then thread the screwsThe Raypak 005891F O ring is a critical sealing component specifically engineered for Raytherm pool heater models P 2100 through P 4001. Designed for high performance sealing within the header manifold and unitherm governor assemblies, this genuine Raypak replacement part ensures a pressure tight connection that prevents bypass leaks and maintains thermal efficiency. Constructed from high durometer material capable of withstanding industrial