Weil McLain 510-218-145 Gauge

The Weil McLain 510-218-145 is a professional-grade water gauge glass cock set engineered specifically for technical diagnostics and liquid level monitoring in steam boiler systems. This assembly features a 1/2" NPT male inlet configuration, utilizing high-quality cast bronze construction to ensure a pressure-tight seal and long-term reliability in high-temperature hydronic environments. Designed as a direct OEM replacement part, this set includes both upper and lower cocks, allowing technicians to isolate the gauge glass during maintenance or replacement of the 5/8" glass tube. The long stem design provides necessary clearance for standard boiler insulation and casings, while the manual handwheels ensure precise control over the steam and water flow. For contractors servicing Weil McLain boiler models such as the EG, EGH, LGB, and 88 series, maintaining the integrity of the steam trim with a Weil McLain 1/2 inch gauge cock is essential for preventing steam leaks and ensuring accurate water level visualization during the sight glass blow-down procedure.

• OEM Precision: Specifically designed for Weil McLain steam boilers, ensuring drop-in compatibility with legacy and current 1/2" NPT configurations.
• Durable Construction: Heavy-duty bronze body resists corrosion and mineral buildup common in steam heating applications.
• Enhanced Safety: Allows for total isolation of the gauge glass, facilitating safe maintenance without depressurizing the entire boiler system.
• Complete Set: Includes both the top and bottom water gauge valves required for a complete boiler gauge glass installation.

What is the connection size for the gauge glass?
These cocks are designed to accept a standard 5/8" diameter gauge glass, which is secured using the provided compression nuts and washers.

Does this set include the glass tube?
No, the 510-218-145 consists of the set of two glass cocks only. The gauge glass tube must be sourced separately based on the specific height required for your boiler model.

Is this compatible with non-Weil McLain boilers?
While the 1/2" NPT male inlet is a standard size, this set is optimized for the clearance and operating parameters of Weil McLain hydronic systems. Always verify center-to-center dimensions before cross-referencing.

This item is not eligible for free shipping.

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.