McDonnell & Miller 345700 Float and Gaskets R-410A Simplified Diagnostics: Standardized resistance values

Simplified Diagnostics: Standardized resistance values allow for quick field verification using a multimeter

As a direct-fit thermal expansion valve kit

Replacing the relay along with the associated start capacitor is recommended to ensure the entire starting circuit is functioning correctly

Designed for industrial and commercial hydronic systems

Common Questions & Troubleshooting Will this fix a 3-flash or 2-flash "Pressure Switch Open" error

McDonnell & Miller 345700 Float and Gaskets R-410A Simplified Diagnostics: Standardized resistance valuesThe McDonnell & Miller 345700 (Model SA91 60) is a high precision replacement float and gasket kit engineered for heavy duty boiler water level control. As a critical component for Series 93, 193, 94, and 194 combination pump controllers and low water cut offs, this stainless steel float assembly ensures accurate buoyancy and reliable switch activation in high pressure steam environments. The SA91 60 replaces legacy models including the SA92 60 and