this unit is rated for low-pressure steam applications up to 15 psig

allowing the HVAC control board to maintain the gas valve in the open position

This is a factory-calibrated safety device

this 48 frame motor features a fixed counter-clockwise (CCW) rotation

you know that timing and accuracy are paramount when preventing coil freeze-ups

Watts 0274683 Valve 320734-701 this unit is rated forFor high output heating systems requiring robust overpressure protection, the Watts 0274683 (Series 174A 100) is a critical component for both residential and commercial hot water supply boilers. This 3 4 inch pressure relief valve is engineered with a durable bronze body and features an ASME Section XIII certification, ensuring it meets rigorous safety standards for emergency relief. With a factory set point of 100 PSI and a high steam discharge