the CMH-20 head pressure control prevents evaporator coil freeze-ups and ensures consistent refrigerant flow during off-season cooling demands

Integrated Air Venting: The internal thermostatic bellows eliminate air binding and improve system startup times

OEM Precision: Guaranteed fit for Amana and Goodman equipment

Is this transmitter compatible with hydraulic spikes

Its robust internal diaphragm and solenoid assembly are designed for vertical or horizontal orientation

Resideo WT8840C1500 Gas Valve 320819-301 the CMH-20 head pressure controlThe 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