A veteran tech will tell you to replace the gasket every time the pilot tube or pilot generator is serviced to prevent nuisance service calls related to air leaks or pilot drop-outs

Common Questions & Troubleshooting How do I verify if the 100294585 pressure switch is bad

Enhanced Robustness: Constructed with high-tolerance internal components to prevent pilot tube clogging and sliding block failure

it ensures that your building automation system (BAS) receives stable

Are repair internal components available for this model

McDonnell & Miller 247-2 Water Feeder THPU32HP7Y A veteran tech will tellThe McDonnell & Miller 247 2 (Part Number 133800) is a heavy duty mechanical water feeder specifically designed for steam and hot water boilers requiring consistent cold water makeup. This unit features a built in No. 2 Switch, providing integrated Low Water Cut Off (LWCO) functionality with two snap acting SPDT switches. This configuration ensures that if the water level drops below a safe threshold, the burner circuit is interrupted while