Velocity Boiler Works (Crown) 960122 Rollout Switch 321702-401 Ensure your secondary heat exchanger

Ensure your secondary heat exchanger is draining properly by utilizing this genuine trap/elbow assembly for all compatibility-matched service applications

installing an incorrect rotation wheel will result in significantly reduced airflow and potential motor overheating

slip-free connection between DuraDrive spring return actuators and globe valve stems

Maintenance Efficiency: Designed with a "Cool Blue" cap that allows for rapid inspection and disc replacement without breaking pipe connections

Velocity Boiler Works (Crown) 960122 Rollout Switch 321702-401 Ensure your secondary heat exchangerThe Velocity Boiler Works 960122 Rollout Switch is a critical safety component designed for gas fired natural draft water boilers and industrial heating systems. Engineered as a high limit safety device, this 240C flame rollout switch monitors the burner area for excessive heat rollout, which often indicates a blocked flue or a compromised heat exchanger. Upon detecting temperatures exceeding its 240 degree Celsius threshold, the switch breaks the