McDonnell & Miller 313900 Gasket

The McDonnell & Miller 313900 is a high-performance valve bracket gasket engineered specifically for technical reliability in boiler water feeder systems. This part, recognized by the model number 37-27, is the critical seal required for McDonnell & Miller 47 Series, 51 Series, 53 Series, and 3155 Series units. Designed as the direct replacement for the legacy 312800, this updated component ensures a pressurized, leak-proof interface between the valve bracket and the float chamber. Sold as a package of 5, it allows contractors to stock necessary inventory for multiple service calls involving 247, 51-S, and 851-S models. For veteran technicians, ensuring a clean mating surface is paramount; this gasket is fabricated to withstand fluctuating thermal stresses and chemical exposures common in industrial hydronic environments. Incorporating the 37-27 gasket during routine maintenance prevents fluid bypass and maintains the calibration of the water feeder's mechanical linkage, securing system integrity without the need for frequent re-servicing.

• Direct OEM Compatibility: Verified fit for McDonnell & Miller 47, 51, 53, and 3155 series water feeders, ensuring precise alignment during valve bracket gasket replacement.
• Upgraded Durability: As the official successor to the 312800 gasket, it features refined material composition to handle high-pressure hydronic applications.
• Efficient Bulk Packaging: Each order contains a 5-pack of gaskets, providing a cost-effective solution for large-scale boiler room maintenance.
• Operational Integrity: Prevents external leakage at the valve assembly, which is essential for accurate low-water cutoff and feeder synchronization.

Is the 313900 gasket compatible with the older 312800 part number?
Yes, the McDonnell & Miller 313900 is the direct, updated version of the 312800. It maintains the same physical dimensions and hole patterns across compatible 47, 51, and 53 series brackets.

How many gaskets are required per unit for a full rebuild?
While the 3155 series typically requires a single gasket, most other compatible series units utilize two gaskets for a complete valve bracket overhaul. This 5-pack ensures you have sufficient supply for comprehensive repairs.

Can these gaskets be used on both steam and hot water boilers?
These gaskets are designed for the valve brackets found on standard McDonnell & Miller water feeders, which are utilized in both steam and hot water heating systems, provided the operating pressures fall within the equipment's rated specifications.

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.