Waterway ProClean 2-1/2" x 2" TP Complete Union with Gasket (400-5961-2B) pentairpacfab or no longer compatible

or no longer compatible

The broad spa-and-pool application gives this cartridge practical value because some cartridge sizes are used across multiple system types while still depending on an exact reference match

Installed in the correct E2 Super Duplex setup

The 91140050 is a strong service choice when the goal is to restore a compatible AquaFlo A Series wet end with the right foundation piece rather than trying to build around a weakened original part

helping direct water flow while maintaining a finished appearance at the surface

Waterway ProClean 2-1/2" x 2" TP Complete Union with Gasket (400-5961-2B) pentairpacfab or no longer compatibleWaterway ProClean 2 1 2" x 2" TP Complete Union with Gasket (400 5961 2B) is a replacement sealing part for compatible Waterway Plastics equipment. It helps create or restore a watertight seal at the matching connection point, reducing leaks and supporting proper equipment operation after service, disassembly, or component replacement. Seals, o rings, and gaskets should generally be replaced whenever the related assembly is opened or when the original