Weil Mclain 511044508 Natural Gas Valve 1/2 Inch Npt

Product Description

The WEIL MCLAIN 511044508 is a natural gas valve with a 1/2 inch NPT connection, designed for use in hydronic heating systems and gas-fired boilers. This valve controls gas flow within the appliance and is supplied without a brass hose barb fitting. It is a direct OEM-style replacement component intended for installation by licensed plumbers, gas fitters, or HVAC technicians servicing Weil-McLain heating equipment. The 1/2 inch NPT thread size is standard for residential and light commercial gas piping connections, making this valve a straightforward swap in the appropriate application.

This gas valve is suited for residential and light commercial hydronic heating systems that use natural gas as the fuel source. It is a service and repair part, typically installed during scheduled maintenance or when an existing valve has failed. Technicians working on Weil-McLain boilers will find this valve relevant when the original equipment requires a like-for-like gas valve replacement without the brass hose barb accessory.

Key Features

• 1/2 inch NPT connection for standard gas piping integration
• Designed for natural gas fuel systems
• Supplied without brass hose barb fitting
• OEM replacement part for Weil-McLain heating equipment
• Suitable for residential and light commercial boiler applications

Compatibility

Designed as an OEM-style replacement gas valve for Weil-McLain natural gas boilers and hydronic heating systems requiring a 1/2 inch NPT gas valve without a brass hose barb.

Installation Notes

Installation should be performed by a licensed gas fitter, plumber, or HVAC technician in accordance with local codes and the appliance manufacturer guidelines. Shut off the gas supply and allow the system to depressurize completely before removing the existing valve. Verify NPT thread compatibility and use appropriate pipe sealant rated for gas service on all threaded connections. Leak-test all connections with an approved gas leak detection solution before restoring gas flow and relighting the appliance.

Technical Specifications

• Connection Size: 1/2 inch NPT
• Fuel Type: Natural Gas
• Hose Barb: Not included
• UPC: 672619182936

Standard Information

• Brand: WEIL MCLAIN
• Manufacturer Part Number: 511044508