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Improves confidence in heater restoration
When the cartridge media loses effectiveness
The Hayward filter head O-ring is designed for compatible filter applications where the head section needs dependable sealing
A replacement may be needed when the original fitting is cracked
Pentair MasterTemp 200/Max-E-Therm 200 Air Orifice (77707-0111) controlsystems Improves confidence in heater restorationThis replacement MasterTemp 200 Max E Therm 200 Air Orifice gives technicians and pool owners a focused way to repair the affected assembly without replacing more equipment than necessary. It is used in the heater combustion system to help meter the air path for the correct burner configuration. Because orifice sizing affects how the heater breathes and fires, this is a precision replacement part rather than a generic fitting. Before installation,
