Dixon Valve Coupling MSC1520609K Oxygen Hose Coupling

Product Description

The DIXON VALVE COUPLING MSC1520609K is a brass welding hose coupling designed for oxygen line service. It features a 9/16-inch right-hand thread (UNF standard) and accepts hose with a 3/8-inch inner diameter. The threaded connection provides a reliable, leak-resistant joint suited to the pressure and gas-purity demands of oxygen delivery in welding and cutting systems. Licensed gas welders, pipefitters, and HVAC technicians working with oxy-fuel equipment rely on this type of fitting to terminate or join oxygen supply hoses safely. The brass construction resists corrosion and meets the material compatibility requirements commonly associated with oxygen service fittings.

This coupling is intended for use in oxy-fuel welding and cutting setups where a right-hand threaded UNF connection is required on the oxygen hose. It is well suited for light industrial and workshop environments where oxygen regulators, torches, or manifold systems are connected via flexible hose assemblies. The 3/8-inch ID sizing is a common hose bore for low- to medium-pressure oxygen delivery lines in these applications.

Key Features

• 9/16-inch right-hand UNF thread for standard oxygen line connections
• 3/8-inch inner diameter hose acceptance for common oxygen supply hose
• Brass construction provides corrosion resistance and oxygen-service compatibility
• Threaded connection type for secure, leak-resistant assembly
• Sold as a single unit, ready for immediate use

Compatibility

Designed as an OEM-style replacement or field-use coupling for oxygen supply hose assemblies requiring a 9/16-inch right-hand UNF threaded brass fitting with a 3/8-inch ID hose bore.

Installation Notes

This fitting should be installed by a qualified welder, pipefitter, or gas equipment technician familiar with oxygen-service safety requirements. Always purge and depressurize the oxygen line before disconnecting or installing any coupling. Never use petroleum-based thread sealants or lubricants on oxygen service fittings, as these present a serious fire and explosion hazard. Inspect the fitting and hose end for cleanliness and damage before making up the threaded connection.