Overview
The Praxair PRS27108 CGA-320 to CGA-580 brass adaptor is a precision-engineered cylinder-to-regulator adapter designed for oxy-fuel welding and cutting operations. This adaptor solves mating surface incompatibilities when connecting CGA-320 cylinders (typically used for COâ‚‚ and inert gases) to CGA-580 regulators (standard nitrogen and mixed gas service). The brass construction ensures durability and corrosion resistance in demanding industrial environments.
Key Features
- Converts CGA-320 cylinder threads to CGA-580 regulator threads
- Brass construction for durability and chemical resistance
- Rated for pressures up to 200 psig (1400 kPa)
- Designed for oxy-acetylene and inert gas welding/cutting systems
- Praxair ProStar equipment compatibility
- Simple, reliable one-piece design
Technical Specifications
- Part Number: PRS27108
- Manufacturer: Praxair ProStar
- Inlet Connection: CGA-320 cylinder (0.830″-14 NGO right-hand thread)
- Outlet Connection: CGA-580 regulator (0.960″-14 NGO right-hand thread)
- Material: Brass
- Maximum Operating Pressure: 200 psig (1.4 MPa)
- Service Gases: Carbon dioxide, nitrogen, argon, inert gases
- Condition: New in box
Typical Applications
- Oxy-acetylene welding and cutting torch systems
- Inert gas shielded arc welding (MIG/TIG) equipment
- Industrial metal fabrication and repair shops
- CNC machining centers requiring auxiliary gas systems
- Portable welding and cutting operations
- Regulator and torch adaptor kits
Compatibility & Replacements
Compatible With
- Praxair ProStar welding and cutting equipment
- CGA-320 cylinder outlets (COâ‚‚, inert gas cylinders)
- CGA-580 regulator inlets (nitrogen, argon, mixed gas)
- Standard oxy-fuel torch systems
- Industrial gas delivery systems rated to 200 psig
Replaces / Drop-In Replacement For
- Western Enterprise #806 (equivalent adaptor)
- Superior Products #A-809 (equivalent specification)
- Generic CGA-320 to CGA-580 brass adaptors from other manufacturers
Works With
- Praxair gas delivery and regulation systems
- Standard CGA (Compressed Gas Association) threaded connections
- All CGA-320 and CGA-580 certified equipment
- NGO right-hand thread gas adaptor systems












