McDonnell & Miller 314100 Valve Gasket

The McDonnell & Miller 314100 Valve Gasket is a critical sealing component engineered for high-performance boiler water feeders and low water cut-off systems. As the direct updated replacement for the obsolete 312900 model, this 37-28 gasket features a precision two-hole design that ensures a leak-proof interface between the valve and strainer assemblies. It is specifically designed for technical compatibility with Series 53, Series 3155, Series 21, Series 25A, and Series 51 units. For contractors performing routine maintenance, this HVACR replacement part provides the necessary compression to prevent steam and water bypass in pressurized systems. Utilizing this OEM-spec valve gasket helps maintain the integrity of the float-type control head, ensuring the safety of the steam boiler by preventing nuisance shutdowns or dry-fire conditions caused by losing a tight seal at the valve connection.

Key Benefits:

• Direct Cross-Reference: Seamlessly replaces the discontinued 312900 part with improved tolerances.
• Broad Compatibility: Fully compatible with McDonnell & Miller Series 53, 3155, 21, 25A, and 51 water feeders.
• Industrial-Grade Seal: Precision-cut 37-28 model design prevents leaks in high-pressure steam environments.
• Maintenance Efficiency: Standard two-hole configuration allows for rapid installation during annual head mechanism inspections.

Common Questions:

• Is the 314100 a direct fit for the old 312900? Yes, the 314100 is the official updated part number and serves as a drop-in replacement for the 312900 gasket.
• How do I ensure a proper seal during installation? Ensure the flange surface is scraped clean of all old gasket material before seating the new 314100 to prevent uneven compression.
• Which Series use this specific gasket? This gasket is the primary valve seal for Series 53, 3155, 21, 25A, and 51 boiler controls.

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.