ensuring the system shuts down if the heat exchanger exceeds safe operating limits

high-grade materials resistant to the thermal stresses of hydronic systems

Precise Thermal Calibration: Factory-set 115-140F range provides accurate over-temperature protection without drift

Finger-tighten the nut into the gas valve

providing clean break/make cycles for compressors

Honeywell 309292 Diaphragm ensuring the system shuts downThe Honeywell 309292 Diaphragm is a critical replacement component engineered for high performance pneumatic systems. This 5 inch neoprene diaphragm is specifically designed for use with the Honeywell MP516 series pneumatic damper actuators, and it also serves as an OEM spec replacement for the MP953 series and legacy part number 310673. Constructed from industrial grade neoprene, this component offers superior flexibility and chemical resistance to