McDonnell & Miller 311200 Float and Gasket R-410A ensuring efficient combustion and compliance

ensuring efficient combustion and compliance with environmental Low NOx standards for modern gas furnace maintenance and repair

verify continuity across this automatic reset limit switch to ensure proper circuit interruption and system reliability

This is the primary component for technicians seeking to restore factory-spec HVAC combustion efficiency and system reliability in Weil-McLain LGB boilers

This CSA and ULC certified valve integrates seamlessly with existing 30mV thermocouples

meaning it will restore the circuit once the pressure drops below the set differential

McDonnell & Miller 311200 Float and Gasket R-410A ensuring efficient combustion and complianceThe McDonnell & Miller 311200 Float and Gasket is a critical OEM replacement kit for Series 21 (Model 21 30) mechanical water feeders. As a veteran grade boiler replacement part, this assembly is engineered to maintain precise fluid level control in condensate receiver tanks and industrial boiler systems. The 4 3 4 copper float and high grade replacement gasket ensure a professional grade seal and reliable proportional feed action. Supporting a