Velocity Boiler Works (Crown) 960122 Rollout Switch 321702-401 this unit ensures precise manifold

this unit ensures precise manifold alignment and combustion chamber sealing

Designed with a 30-second pre-purge and 120/240V inducer blower relay support

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

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

Velocity Boiler Works (Crown) 960122 Rollout Switch 321702-401 this unit ensures precise manifoldThe 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