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Applying 24V will fail to engage the operator
ensuring precise furnace temperature regulation and efficient blower motor engagement
Whether you are performing a routine summer tune-up or an emergency service call
maintaining the integrity of the original air handler or furnace airflow profile
the damper prevents standby heat loss by closing the flue during off-cycles
Watts 0386471 Valve 326058-758 Applying 24V will fail toThe Watts 0386471 (Series 9D M3) is a heavy duty 1 2" backflow preventer with vent designed specifically for boiler feed lines, laboratory equipment, and processing tanks where continuous pressure is a factor. As a veteran grade dual check valve, it features a forged brass body and stainless steel internal components to resist fouling and ensure long term reliability in non health hazard applications. The integrated atmospheric vent provides an