Pay in 4 interest-free payments of $19.53 Learn more
Ships within 48 hours · Estimated delivery Oct 15 - Oct 20
This heavy-duty SPDT thermostat features a snap-acting switch that provides reliable two-position (on/off) control
preventing air binding in your steam system
It includes two pilot diaphragms and the pilot valve seat capsule
or cracked pressure tubing
Carrier HH18HA202 Rollout Switch 30067439-890 This heavy-duty SPDT thermostat featuresThe Carrier HH18HA202 Rollout Switch is a critical safety component designed for gas fired furnaces and heating systems. Engineered as a manual reset limit switch, this SPST (Single Pole Single Throw) device is calibrated to open the circuit at a fixed 350 degrees F. When excessive heat is detectedtypically indicating a flame rollout condition or heat exchanger breachthe switch interrupts the 24V control circuit to shut down the gas valve immediately.
