Weil McLain 511-044-040 Valve

The Weil McLain 511-044-040 is a specialized pilot line solenoid gas valve designed for integration with Weil McLain LGB and MGB boilers. Engineering for high-demand hydronic heating systems, this 120 volt solenoid valve features a 1/4" NPT threaded connection, facilitating a secure and leak-resistant interface with standard gas lines. As a quick opening gas valve, it responds with minimal latency to electrical signals from the control module, ensuring the pilot gas stream is established or interrupted precisely when required. Technicians should note that this direct-acting solenoid is critical for maintaining fuel flow control in Weil McLain commercial boiler units, specifically sizes 6 through 23. The robust internal construction is built to withstand repeated cycling in pilot burner applications without compromising seat integrity. When servicing older gas-fired water boilers, this genuine OEM component is the standard for restoring reliable ignition sequences and gas safety shutoff functionality.

• Optimized Compatibility: Purpose-built for Weil McLain LGB and MGB series boilers to ensure seamless control logic integration.
• Fast-Acting Response: The quick opening design ensures instantaneous gas delivery for consistent pilot flame ignition.
• Standardized Fit: 1/4" NPT threading allows for standard tool installation without the need for specialized adapters.
• High Reliability: Designed for 120V AC operation, making it a drop-in replacement for the majority of commercial boiler control circuits.
• Industrial Durability: Constructed with materials resistant to the thermal stresses common in commercial mechanical rooms.

• Which boiler models utilize this specific solenoid valve? This part is primarily used in Weil McLain LGB and MGB gas-fired boilers, including boiler sizes 6-12 and 13-23.
• What is the primary function of the quick-opening feature? It allows the valve to reach full flow capacity immediately upon being energized, which is essential for certain pilot ignition sequences where timing is critical.
• Can this valve be used for main gas line applications? No, this is a 1/4" NPT valve specifically rated for pilot line duty and should not be used as a primary gas safety shutoff for high-volume main burners.

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.