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This HVAC freeze protection switch features a fixed setpoint
Optimized Performance: Operates at a 24 VDC coil rating
making it a critical part of the Maxitrol spring selection chart for high-capacity applications such as main burner or pilot load regulation
For fan-on applications
Honeywell 312471 Spring 30067439-890 This HVAC freeze protection switchThe Honeywell 312471 is a high performance replacement pneumatic actuator spring specifically engineered for 13 inch MP953A, MP953C, and MP953E series actuators. As a critical component in proportional control systems, this white spring provides a precise 4 11 PSI operating range, ensuring accurate valve positioning for steam, hot water, or chilled water applications. Designed for industrial grade durability, it maintains consistent tension to
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