Pentair Purex MMX/MMX Plus/PowerMax Electronic T-Stat IID PCB (470179) poolcovers When the working cartridge becomes

When the working cartridge becomes heavily loaded or worn out

or lost elasticity

Designed for compatible main-drain applications

which can reduce strain on downstream filtration components

A suction cover is useful because it helps protect the intake point while allowing water to flow through the system

Pentair Purex MMX/MMX Plus/PowerMax Electronic T-Stat IID PCB (470179) poolcovers When the working cartridge becomesDesigned for service work on older Purex equipment, this component helps restore the fit, seal, or mechanical function that keeps the system operating correctly. The control board is used on MMX MMX Plus PowerMax Electronic T Stat IID PCB applications and supports electronic command, temperature regulation, or safety logic inside the heater system. It is a useful replacement when the existing part is cracked, corroded, stripped, distorted, leaking,