the ICM325A Low Ambient Head Pressure Control provides a professional-grade solution for single-phase motor speed modulation

Integrating this genuine HVAC ignition component restores the system to factory performance levels

Optimized Compatibility: Engineered specifically for Lennox furnace air safety circuits

The kit contains the diaphragm

Watts 0121470 Relief Valve 30067439-890 the ICM325A Low Ambient HeadThe Watts 0121470 (LF174A) 3 4" water pressure relief valve is a critical safety component designed for hot water heating boilers and hydronic systems. Engineered with a lead free copper silicon alloy body, this valve ensures compliance with low lead regulations while providing a high capacity discharge of 1,320,000 BTU hr at a fixed 75 PSI set pressure. The large diaphragm operated design minimizes the risk of seat sticking, while the non mechanical