Description
The 764-742 is a 1/2-inch pilot safety valve designed for natural gas standing pilot heating systems, serving as the primary gas flow control and pilot safety shutoff device in millivolt-operated furnaces, boilers, water heaters, and other gas appliances that rely on a continuously burning pilot flame for ignition and valve actuation. Pilot safety valves in standing pilot systems use the millivolt signal generated by the thermocouple or thermopile sensing the pilot flame to hold the valve in the open position, automatically shutting off gas flow to both the pilot and main burner if the pilot flame is lost. The 1/2-inch connection size accommodates standard residential and light commercial gas line configurations, and the natural gas calibration ensures correct valve operation and flow characteristics for NG fuel supply. This valve is a critical safety component in any standing pilot gas appliance, and correct replacement with a properly rated pilot safety valve is essential for maintaining safe and reliable equipment operation. The 764-742 is suited for use by licensed HVAC and plumbing technicians performing gas valve replacement on standing pilot heating equipment.
Key Features
- 1/2-inch connection size compatible with standard residential and light commercial natural gas supply piping
- Designed for standing pilot millivolt heating systems including furnaces, boilers, and water heaters
- Pilot safety shutoff function cuts gas flow to pilot and main burner when pilot flame is lost
- Millivolt thermocouple or thermopile signal holds valve open during normal pilot operation
- Natural gas calibration ensures correct flow characteristics and valve actuation for NG fuel supply
- Controls gas flow to both pilot burner and main burner circuits within a single valve body
- Critical safety replacement component for residential and light commercial standing pilot gas appliances
- Intended for installation by licensed HVAC or plumbing technicians performing gas valve service
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