Watts 0121451 Valve R-410A designed to move high volumes

designed to move high volumes of air while maintaining structural integrity under peak load

With an adjustable range of 8 to 70 PSIG and a manual reset mechanism

90" WC setpoint and a multimeter to check for continuity across the terminals when the draft is established

Broad Media Compatibility: The Nitrile seal material and brass construction provide excellent resistance when used with water

Fail-Safe Operation: Internal 8-13 psi spring provides a reliable mechanical return to the retracted position if pneumatic signal pressure is lost

Watts 0121451 Valve R-410A designed to move high volumesThe Watts 0121451 (Model 140S 3 1 150) is a high capacity automatic reseating temperature and pressure relief valve engineered for protection in commercial hot water supply systems. Designed for heavy duty tank tappings, this 1 inch valve features a 3,085,000 BTU hr steam discharge capacity and a standard 150 psi pressure relief setpoint. As a veteran grade commercial T&P relief valve, it utilizes a bronze body and a 3 inch stainless steel thermostat