Honeywell 9.803-616.0 Natural Gas Valve 3/4" NPT 24V - 4287
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This Honeywell 3/4" NPT gas valve controls the natural gas supply to the burner on gas-fired hot water pressure washers and heaters. It runs on a standard 24V control circuit. When the machine calls for heat, the valve opens and sends gas to the burner. It also regulates outlet pressure to a steady setting, listed as 3.5, which is most likely 3.5" water column, the standard manifold pressure for natural gas. Steady pressure keeps the flame clean and the heat output consistent.
A failing gas valve can cause no heat, intermittent heating, short cycling, or a burner that won’t light or stay lit. Swapping in a new valve restores reliable burner operation and keeps the gas supply properly regulated.
Key features:
- 3/4" NPT gas connections
- For natural gas
- 24V control voltage
- Regulated outlet pressure (3.5)
- Made by Honeywell
- Part number 9.803-616.0