McDonnell & Miller 343600 Float and Gasket 30067439-890 Always check the part number

Always check the part number stamped on the side of the original pressure switch

The 2CH utilizes a threaded nut for the thermocouple interface

For technicians performing HVAC furnace repair or preventative maintenance on Aaon equipment

and electronic thermostats

ensuring that the set screw is seated firmly on the flat of the shaft to prevent harmonic vibrations

McDonnell & Miller 343600 Float and Gasket 30067439-890 Always check the part numberWhen you're dealing with a McDonnell & Miller 343600 Float and Gasket (Model SA64 30), you're handling a critical safety component for steam boiler maintenance. This replacement assembly is specifically engineered for the Series 64 Low Water Cut Off and the high capacity Series 764 controls. In a hydronic heating system, the float must respond instantly to water level fluctuations to prevent dry firing. This kit includes the precision weighted