McDonnell & Miller 340600 Float and Gasket

Ensure the reliable operation of your boiler water line with the McDonnell & Miller 340600 replacement float and gasket assembly. This critical SA37-30 float kit is engineered specifically for Series 47 and Series 247 mechanical water feeders. As a veteran technician knows, maintaining the integrity of the float assembly is essential for accurate water level control and preventing dry-fire conditions. The 340600 includes a high-durability float and the necessary replacement gasket for a leak-free seal during re-installation. This genuine McDonnell & Miller part eliminates the risk of compatibility issues often found with aftermarket components, ensuring your boiler water feeder maintains the precise operating point required for maximum steaming efficiency. Whether you are performing annual maintenance or responding to a failed low water cut-off diagnostic, this float assembly provides the rugged construction needed for high-temperature and high-pressure steam environments. Always verify the date code on your existing 47 series feeder to ensure a perfect match for the SA37-30 model.

• Direct Compatibility: Engineered for seamless integration with Series 47, 47-2, Series 247, and 247-2 mechanical water feeders.
• Complete Maintenance Kit: Includes both the SA37-30 float and the required gasket to ensure a professional, pressurized seal.
• Precision Level Monitoring: Restores factory-standard buoyancy and response for accurate boiler water level management.
• Rugged Construction: Built to withstand the chemical and thermal stresses common in residential and commercial steam systems.

How do I know if the float or the switch is the problem?
If the boiler continues to fire despite low water levels, or if the water feeder fails to actuate, first test the switch for continuity. If the switch operates normally when manually cycled, inspect the float assembly for buoyancy loss or sediment buildup within the chamber.

Is the gasket included with the 340600?
Yes, this part number specifically includes the SA37-30 float and the corresponding high-temperature gasket required for reassembly to prevent leaks at the mounting flange.

Can I use this float for a Series 51 feeder?
While some components look similar, the 340600 is specifically calibrated for the Series 47 and Series 247. For Series 51 or 53 feeders, you must use the manufacturer-specified float kit to ensure proper displacement and lever action.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.