Watts 0386471 Valve 326058-758 Whether you are performing a

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

Applying 24V will fail to engage the operator

the damper prevents standby heat loss by closing the flue during off-cycles

Common indicators include solenoid humming

Watts 0386471 Valve 326058-758 Whether you are performing aThe 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