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Measuring 4
Technicians often see "stuck" contacts where heating elements stay energized after the thermostat is satisfied
Its unique universal operation allows the valve to be piped in any configuration—normally closed
serves as a critical component for restoring factory-spec airflow in residential furnaces and commercial package units
Resideo WT8840C1500 Gas Valve 320074-702 Measuring 4The Resideo WT8840C1500 is an integrated gas control valve engineered for residential tank type gas water heaters utilizing an atmospheric vent system. This service and replacement part consolidates temperature regulation, pilot management, and safety shutoff protocols into a single high reliability unit. Designed for natural gas systems, the valve is calibrated for 4" water column (WC) manifold pressure, ensuring stable burner operation and precise