Pentair MasterTemp 400/Max-E-Therm 400 Air Orifice (77707-0113) waterway The FDXLBRN1930 is a practical

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

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

Supports more dependable system control after repair

Supports cleaner and more dependable drilling operation

Pentair MasterTemp 400/Max-E-Therm 400 Air Orifice (77707-0113) waterway The FDXLBRN1930 is a practicalFor 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,