Dixon Valve Coupling 1580909C Welding Hose Adapter

Product Description

The DIXON VALVE COUPLING 1580909C is a brass welding hose adapter designed to connect welding hoses and regulators in gas distribution and welding supply systems. It features a 9/16 inch NPTF threaded connection with a left-hand thread direction, which is the standard safety configuration used on fuel gas fittings to prevent accidental interchange with oxygen-side components. The adapter measures 1.25 inches in overall length and weighs approximately 0.1 pounds. It is installed by plumbers, pipefitters, and welding equipment technicians working on acetylene, propane, or other fuel gas hose assemblies.

This adapter is suited for residential and light commercial welding setups, cutting rigs, and fuel gas distribution lines where a threaded hose-to-fitting transition is required. The left-hand UNF thread standard is consistent with CGA and industry conventions for fuel gas service, making this a practical replacement or repair component for existing welding hose assemblies. Its compact size makes it compatible with tight installation spaces common in welding carts, manifold systems, and portable gas supply configurations.

Key Features

• Left-hand thread direction per fuel gas industry convention to prevent cross-connection with oxygen fittings
• 9/16 inch NPTF threaded connection for secure, pressure-rated seal
• Brass construction for corrosion resistance and compatibility with fuel gas service
• Compact overall length of 1.25 inches for use in confined fitting spaces
• UNF thread standard for reliable engagement with compatible welding hose couplings

Compatibility

Designed as an OEM-style replacement welding hose adapter for fuel gas hose assemblies requiring a 9/16 inch NPTF left-hand threaded connection.

Installation Notes

Installation should be performed by a qualified pipefitter, welding equipment technician, or licensed tradesperson familiar with fuel gas systems. Shut off all gas supply valves and relieve system pressure completely before removing or installing any hose fittings. Left-hand threaded fittings tighten counterclockwise and loosen clockwise — do not apply standard right-hand thread force. Inspect threads and sealing surfaces for damage before installation and verify there are no leaks using an approved leak detection solution after pressurizing the system.