Weil McLain 383-500-210 Gauge

The Weil McLain 383-500-210 Pressure/Temperature Gauge is a factory-direct OEM replacement part engineered specifically for Ultra Gas Boiler series (Series 1 & 2). As a dual-function diagnostic instrument, it provides real-time hydronic system monitoring, featuring a pressure range of 0–55 PSI and a temperature scale of 60–260°F. This short-shank gauge utilizes a back-mounted threaded connection, ensuring a precise fit within the boiler's integrated piping arrangement without the need for field modifications. For technicians servicing high-efficiency condensing units, maintaining an accurate boiler pressure gauge is critical for verifying proper expansion tank operation and preventing high-limit trips. The high-contrast analog dial allows for immediate inspection of system operating parameters during startup or routine maintenance. By replacing a fouled or sluggish gauge with this genuine Weil McLain 383-500-210, you ensure the integrity of the boiler’s safety controls and optimize performance for residential and commercial heating loops.

• Dual-Function Monitoring: Consolidates pressure (PSI) and temperature (°F) readings into a single analog dial for streamlined diagnostics.
• OEM Precision: Designed as a direct drop-in replacement for the Weil McLain Ultra series, ensuring accurate calibration to factory specs.
• Durable Construction: Built to withstand the constant thermal cycling and pressure fluctuations common in hydronic heating systems.
• Simplified Installation: Features a back-mount threaded stem consistent with factory housing for quick field replacement.

Is this gauge compatible with all Weil McLain boilers?
No, this specific part number is engineered for the Ultra Gas Boiler line (specifically Series 1 and 2). Always verify your boiler size and series number before installation to ensure the shank length and range match.

What causes these gauges to fail?
Standard wear often results from sediment buildup in the sensing bulb or internal diaphragm fatigue over several heating seasons, leading to "pinned" needles or inaccurate readings that complicate boiler troubleshooting.

Can I use an aftermarket universal gauge instead?
While universal gauges exist, they often lack the specific pressure/temperature range and shank dimensions required for the Ultra boiler cabinet, potentially leading to leaks or improper clearance.

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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.