RX WELD Small Oxygen Acetylene Regulator Set - Compact CGA540/CGA200

In this review the RX WELD Small Oxygen Acetylene Regulator Set is evaluated for hobbyists and light fabrication users who need a compact, durable regulator pair for small oxy-acetylene work. The set earns attention because it pairs a CGA-540 oxygen regulator and a CGA-200 acetylene regulator sized for MC tanks, making it a focused choice for torch cutting, brazing, and small welding jobs where portability and correct fittings matter. The most persuasive reason to buy is the brass construction and A-size 3/8'-24 outlet thread compatibility with twin welding hose, which gives reliable pressure control for routine shop tasks.

Key Features

• CGA-540 oxygen inlet: Provides compatibility with standard oxygen tanks and accepts high inlet pressure up to 4000 PSI for stable supply in shop use.
• CGA-200 acetylene inlet: Designed specifically to fit small MC acetylene tanks with CGA-200 valves so users avoid improper tank connections.
• Dual dials on oxygen regulator: Separate inlet and output gauges let you monitor delivery and working pressure precisely from 0-4000 PSI and 0-100 PSI respectively.
• Acetylene pressure range: The acetylene regulator offers delivery and output control suitable for gas welding and cutting with a 0-400 PSI delivery range and 0-30 PSI working output.
• Brass body construction: The regulator meters are made of brass to resist corrosion and withstand harsh workshop environments for long-term use.
• A-size outlet thread: Outlet connectors use 3/8'-24 for A fittings on twin welding hose for direct connection to A-size equipment.

Who It's For

The RX WELD regulator set is best for hobby welders, small shops, and field technicians who use compact oxygen and acetylene cylinders for brazing, light cutting, or torch work and who specifically need A-size fittings and a CGA-200 acetylene inlet. It is a practical, value-oriented option when portability and correct hose compatibility are priorities.

It is not suitable for users who rely on larger acetylene cylinders, propane, disposable MAPP or propane canisters, or those who need B-size fittings; the acetylene regulator only fits small MC tanks with a CGA-200 valve and will not adapt to larger tank valves.

Pros & Cons

Pros

• Solid brass construction offers durability and resistance to workshop conditions.
• Clear pressure ranges and dual dials on oxygen regulator enable accurate setup and monitoring.
• A-size 3/8'-24 outlet threads allow direct connection to twin welding hose for A fittings.
• Designed specifically for MC acetylene tanks with CGA-200 for safe compatibility.

Cons

• Acetylene regulator only fits small MC tanks with CGA-200 and is not compatible with larger tanks or disposable canisters.
• Not suitable where B-size fittings or propane connections are required.

Specifications

Our Verdict

The RX WELD Small Oxygen Acetylene Regulator Set is a focused, well-built option for hobbyists and small shops that need correct A-size hose fittings and a CGA-200 acetylene inlet for MC tanks. Its brass construction and clear pressure ranges make it solid value for routine torch work, but buyers needing larger tank compatibility or propane/MAPP hookups should look elsewhere.

Frequently Asked Questions

Will this fit standard oxygen tanks?
Yes, the oxygen regulator uses a CGA-540 inlet suitable for standard oxygen cylinders.

Can I use this acetylene regulator on larger acetylene tanks?
No, the acetylene regulator only fits small MC tanks with a CGA-200 valve and will not fit larger cylinders.

What hose thread do the outlets use?
The set uses 3/8'-24 outlet threads for A fittings on twin welding hose.