Pentair C/CC/D Series Buna Shaft Seal (U109-433SS) pascospecialty The Pentair 274402Z top mount

The Pentair 274402Z top mount hybrid valve diffuser is designed for compatible 2 inch multiport valve applications where the diffuser component needs replacement

Improves usability and visible presentation

This type of replacement is often needed when the original check valve is leaking back

Helps correct unstable or inaccurate heating behavior

A start capacitor helps deliver the stronger electrical boost some compatible motors need during startup

Pentair C/CC/D Series Buna Shaft Seal (U109-433SS) pascospecialty The Pentair 274402Z top mountPentair C CC D Series Buna Shaft Seal is a genuine Pentair replacement part made for compatible pool and spa pump systems. Pump components can wear over time from heat, vibration, water exposure, debris, and regular equipment use. Replacing a damaged or missing part with the correct component helps keep the pump assembly secure, serviceable, and operating as intended. This part is ideal for repair work, preventative maintenance, or equipment rebuilds