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helps conserve pool chemicals by reducing evaporation
delivering durability in all seasons
As a dedicated Napoleon part
Pool professionals rely on genuine Hayward cartridges for correct fit and performance
H42F model designation for precise replacement alignment
Hayward Gas Valve, 150 to 400, Propane, Dual Stage | HAXGSV0004 Spa Jet Parts helps conserve pool chemicals byWhat This Part Is Used For The Hayward HAXGSV0004 Gas Valve is designed for H Series heaters rated 150 to 400 using liquid propane dual stage systems. It regulates LP gas delivery during heater operation. Why This Part Matters An improperly functioning gas valve can cause ignition problems or unstable flame performance. Replacing it restores controlled gas flow and reliable burner operation. Proper regulation protects both heater components and