Weil McLain 510-218-097 Gauge

The Weil McLain 510-218-097 is a precision-engineered OEM boiler gauge designed for mission-critical monitoring of hydronic heating systems. As a dual-purpose temperature and pressure gauge, it provides real-time diagnostics essential for maintaining optimal boiler performance and identifying potential pressure drops or overheating before they cause system failure. This heavy-duty gauge features a 2-1/2 inch dial with a high-contrast interface, allowing for quick visual verification of system status from a distance.

Built for a direct fit on Weil McLain EG, EGH, 68, and PFG boilers (sizes 85–125), this component utilizes a 1/4" NPT threaded connection with a long shank back-mount configuration. The gauge supports a pressure range of 0–60 PSIG and covers standard hydronic temperature scales. Utilizing a genuine 510-218-097 replacement gauge ensures the sensing element is calibrated to factory specifications, maintaining the physical and operational integrity of the boiler’s safety monitoring loop.

Key Technical Benefits

• Dual-Function Monitoring: Provides simultaneous readings of system pressure and water temperature to streamline diagnostics.
• Direct OEM Fit: Specifically keyed for Weil McLain 510-218-097 applications, ensuring thread compatibility and correct probe depth.
• High-Visibility Dial: The 2-1/2" display features defined increments for 0-60 PSIG, critical for identifying fluctuating system pressure.
• Durable Infrastructure: The long shank design and reinforced back connection provide a secure seal and resist vibration during burner cycles.
• Industrial Calibration: Engineered for precision accuracy in residential and light commercial cast iron boiler configurations.

Common Questions

Is the 510-218-097 compatible with all Weil McLain systems?
This specific gauge is designed for Weil-McLain EG, EGH, 68, and PFG Boilers in sizes 85 through 125. Always verify the specific port clearance and part number in your service manual.

What connection type does this gauge use?
It features a standard 1/4" NPT threaded back connection. It is recommended to use high-quality pipe sealant or PTFE tape to ensure a leak-proof seal during installation.

Does this gauge require a separate well or immersion sleeve?
This combination gauge is designed for immersion into the boiler's tapping. Professionals should ensure the system is depressurized before removing the old gauge to prevent accidental discharge.

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.