Watts 0274427 Valve 340155-7026 The Johnson Controls A19BAC-15 is

The Johnson Controls A19BAC-15 is a professional-grade utility thermostat engineered for precise temperature regulation in demanding environments

The internal relief valve is factory-set to begin relieving at approximately 7-10" W

ensuring a drop-in fit without shim adjustments

this valve is specifically calibrated for R22 and R407C refrigerants

Watts 0274427 Valve 340155-7026 The Johnson Controls A19BAC-15 isThe Watts Series 174A (Ordering Code 0274427) is a high capacity boiler pressure relief valve designed specifically for hot water heating boilers and water supply heaters. This 3 4 inch NPT female inlet outlet valve is engineered with a bronze body and a non metallic disc to metal seat, ensuring consistent performance in high temperature hydronic systems. With a factory set 35 PSI pressure relief and a high steam discharge capacity of 725,000 BTU Hr,