helping reduce temperature fluctuations and system strain

preventing nuisance tripping in gas-fired unit heaters

Clockwise Rotation: Engineered for standard CW orientation (viewed from the hub side) to match specific housing scrolls

allowing for simultaneous modulation of air dampers and fuel valves

Velocity Boiler Works (Crown) 960123 Spill Switch 322838-754 helping reduce temperature fluctuations andThe Velocity Boiler Works (Crown) 960123 Spill Switch is a critical OEM safety component engineered specifically for technical integration within Crown Boiler heating systems. This manual reset spill switch (MR) functions as a blocked vent switch, monitoring the draft hood for heat buildup caused by flue gas spillage. When downdrafts or venting obstructions are detected, the sensor interrupts the 24V control circuit, shutting down the burner to