Dixon Valve Coupling MSC1520309K Oxygen Hose Coupling

Product Description

The DIXON VALVE COUPLING MSC1520309K is a brass welding hose coupling designed for oxygen line service. It features a 9/16 inch right-hand thread in UNF standard and a 3/16 inch inner diameter, making it a direct-fit threaded connector for oxygen supply hoses used in welding and cutting applications. The all-brass construction is well suited for oxygen service, where material compatibility is a critical safety consideration. Licensed welding professionals and industrial gas technicians are the primary installers of this fitting.

This coupling is used in welding and cutting setups where a reliable threaded connection between an oxygen hose and a regulator, torch, or manifold is required. It is applicable in both shop and field environments where oxygen lines require secure, leak-free fittings. The right-hand thread direction follows the standard convention for oxygen service hose connections, and the UNF thread standard ensures compatibility with common oxygen-rated hardware and fittings found in welding supply systems.

Key Features

• Brass construction rated for oxygen line service
• 9/16 inch UNF right-hand thread for standard oxygen hose connections
• 3/16 inch inner diameter hose bore
• Threaded connection type for secure, tool-tightened fitment
• Compact and lightweight at 0.1 pounds

Compatibility

Designed as an OEM-style replacement or service coupling for oxygen welding hose assemblies using 9/16 inch right-hand UNF threaded fittings with a 3/16 inch ID hose bore.

Installation Notes

This fitting should be installed by a qualified welding technician or industrial gas professional familiar with oxygen service requirements. Always shut off and bleed the oxygen supply before disconnecting or installing any hose coupling. Never use oil, grease, or thread sealants not rated for oxygen service, as contact with hydrocarbons under oxygen pressure presents a serious fire and explosion hazard. Inspect threads for damage before installation and tighten to a secure, leak-free fit using an appropriate wrench.