the 341900 bellows assembly is specifically sized and threaded for the 247 Series

Its industrial-grade construction ensures seamless compatibility with standard parallel shaft gearboxes

Its robust insulation is built to withstand the rigorous heat profiles of commercial HVACR environments

Standardized Terminals: Equipped with 1/4-inch quick-connect terminals clearly labeled for Common

Watts 0386471 Valve 323055-751 the 341900 bellows assembly isThe 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