Pentair MasterTemp 400/Max-E-Therm 400 Air Orifice (77707-0113) waterway or no longer delivers the

or no longer delivers the water movement expected from the whirlpool setup

Supports cleaner and more dependable drilling operation

The FDXLBRN1930 is a practical service part when a compatible Hayward heater needs burner tubes to restore dependable combustion support

or automation interface tasks

The Waterco Baker Vertilever valve piston assembly is designed for compatible valve applications where the main moving piston section needs replacement

Pentair MasterTemp 400/Max-E-Therm 400 Air Orifice (77707-0113) waterway or no longer delivers theFor service work on Pentair pool equipment, choosing the exact replacement part helps reduce callbacks and installation delays. This MasterTemp 400 Max E Therm 400 Air Orifice 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. Always compare the existing part,