Weil McLain 511-044-191 Gas Valve

The Weil-McLain 511-044-191 Gas Valve is a critical service component designed for high-capacity atmospheric gas boilers. This 1 inch NPT gas valve operates on a 24V AC heating control circuit and is specifically engineered as a replacement gas valve for Weil-McLain PEG and EGH boilers. As a non-redundant gas valve without regulator, it is intended for use in systems where pressure regulation is handled by an external manifold regulator or as part of a specific OEM configuration. The robust internal diaphragm and solenoid assembly ensure reliable fuel delivery under high-demand cycles. When performing a gas valve replacement, technicians must verify the 1" pipe size and the absence of an internal regulator to maintain correct manifold pressure. Accurate wiring to the 24 volt gas valve terminal is essential for integration with the existing Weil-McLain boiler parts and safety string, ensuring the pilot and main burner ignition sequences remain within manufacturer specifications.

• OEM Compatibility: Exact fit for Weil-McLain PEG boiler parts and EGH series, reducing field modification time.
• High Flow Capacity: The 1 inch NPT inlet/outlet supports larger BTU inputs required for commercial and large residential cast iron boilers.
• Simplified Design: The valve without regulator configuration allows for precise external pressure management in older atmospheric systems.
• Standardized Control: Integrates seamlessly with existing 24V transformers and thermostat circuits common in hydronic heating systems.

Is the 511-044-191 compatible with LP gas?
This valve is typically configured for natural gas applications. Because it lacks an internal regulator, conversion requires adjusting the external manifold regulator to meet the specific BTU and pressure requirements of the propane orifices.

Does this valve include a pilot adjustment screw?
Yes, most 1 inch NPT Weil-McLain gas valves feature a standard pilot adjustment to calibrate the pilot flame for reliable thermocouple or thermopile millivolt production.

Can I use this to replace a valve with a built-in regulator?
No. Replacing a regulated valve with the Weil-McLain 511-044-191 without an external regulator will result in over-firing the burners and creating a hazardous condition.

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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.