Combination Pressure-Temperature Gauge for use with All Boiler Sizes

Weil-McLain 510218099 – Combination Pressure and Temperature Gauge for Boiler Applications

The Weil-McLain 510218099 is a dual-function mechanical gauge designed to monitor internal boiler pressure and water temperature. Commonly installed in residential and light commercial systems, this combination gauge provides at-a-glance feedback critical for performance monitoring and diagnostics. It is manufactured to OEM specifications to ensure compatibility with Weil-McLain boiler systems and meets industry expectations for durability and accuracy.

Application Overview

This gauge is intended for use in hydronic heating systems requiring integrated pressure and temperature measurement from a single access point. It features a short-shank back connection suitable for boiler panel or tapping port installation. The compact analog dial displays readings for both PSI and Fahrenheit, simplifying system assessment during routine service or system checks.

Key Features

• Dual Display: Simultaneous indication of system pressure and water temperature
• Standard Pressure Range: 0 to 55 PSI, suitable for most hydronic boiler systems
• Temperature Range: 60°F to 260°F for accurate monitoring of hot water operation
• Back Connection: 1/4" NPT rear entry with short 2-1/2" shank for compact installations
• OEM Part Identification: Labeled as PTA 1088 (Ametek/ENFM 4104-2-12-1/4 CBM)

Technical Specifications

• Manufacturer: Weil-McLain
• Part Number: 510218099
• Dial Size: 3-1/8 inch combination dial
• Pressure Scale: 0–55 PSI
• Temperature Scale: 60°F to 260°F
• Connection Type: 1/4" NPT back mount
• Shank Length: 2-1/2 inches

Installation Notes

Ensure the system is depressurized and cooled before removing the existing gauge. Apply approved thread sealant during installation. Gauge should be tightened using proper tooling to avoid case deformation. This component is designed for vertical mounting with the dial facing outward. Verify gauge function under normal system operation once installed.

Contractor Guidelines

• Use only with compatible Weil-McLain models or equivalent hydronic systems
• Confirm proper scaling for pressure and temperature before commissioning
• Gauge is not designed for steam systems or chemically aggressive media

Summary

The Weil-McLain 510218099 combination pressure-temperature gauge offers essential functionality for maintaining safe and efficient operation of hot water boiler systems. With its OEM fit, dual-scale dial, and compact rear-mount design, this gauge supports critical system monitoring in both new installations and routine service scenarios.