RX WELD Oxygen and Acetylene Regulators CGA540 CGA200 - Durable

In this review the RX WELD Oxygen and Acetylene regulator set is judged on practicality and compatibility for hobbyists and small shop welders. The bottom line: this pair is best for users who need a basic, affordable CGA-540 oxygen regulator and a small-tank CGA-200 acetylene regulator with clear pressure dials and brass construction. It won the reviewer's recommendation for straightforward oxy-acetylene cutting and welding where compatibility with small MC acetylene tanks and a secure 9/16'-18 hose outlet matter most.

Key Features

• CGA-540 oxygen inlet: Provides a secure oxygen tank connection that fits standard CGA-540 valves for reliable service.
• CGA-200 acetylene inlet: Designed specifically for small acetylene MC tanks with CGA-200 valves so it fits compact tank setups.
• Two pressure dials: Oxygen reads delivery inlet 0-4000 PSI and output 0-100 PSI while acetylene reads inlet 0-400 PSI and output 0-30 PSI for clear control.
• 9/16'-18 outlet thread: Standard outlet hose connectors accept 1/4 in B fittings on twin welding hose for easy hose attachment.
• Brass body construction: Metal construction resists harsh shop environments and gives a solid feel at the regulator and the fittings.
• T-handle and nut included: The set arrives with a T-handle and outlet hose connector nut so it is ready to mount and tune.

Who It's For

This regulator set suits hobby welders, light fabrication shops, and anyone using a V-style welding gas torch with small acetylene MC tanks. It is a practical choice for oxy-acetylene cutting, brazing, and light welding where a compact acetylene regulator (CGA-200) is required.

Those who should look elsewhere include users with larger acetylene tanks, propane or disposable MAPP canister needs, or shop operations that demand industrial-grade multi-stage regulators with higher flow ratings. The small acetylene regulator will not fit larger acetylene valves or propane tanks.

Pros & Cons

Pros

• Clear dual gauges provide separate inlet and output readings for precise pressure control.
• Brass body and included T-handle give a durable, ready-to-install package out of the box.
• Standard 9/16'-18 outlet thread works with common 1/4 in B fittings on twin hose setups.
• Compact acetylene regulator is convenient for portable MC tank use.

Cons

• Acetylene regulator only fits small MC tanks with CGA-200 and will not fit larger acetylene or propane tanks.
• Not marketed as a high-flow industrial regulator for heavy continuous welding jobs.

Specifications

Brand	RX WELDER
Oxygen inlet	CGA-540
Acetylene inlet	CGA-200 (small MC tanks only)
Oxygen pressure range	Inlet 0-4000 PSI, Output 0-100 PSI
Acetylene pressure range	Inlet 0-400 PSI, Output 0-30 PSI
Outlet thread	9/16'-18 for 1/4 in B fittings
Package contents	1 x Oxygen regulator, 1 x Acetylene regulator, T-handle, outlet nut

Our Verdict

The RX WELD regulator set is a sensible, value-focused option for hobbyists and small shops that need a CGA-540 oxygen regulator paired with a CGA-200 acetylene regulator for MC tanks. Its brass construction, clear gauges, and standard outlet threading make it a reliable choice for routine cutting and light welding, while the single-tank acetylene compatibility is the main limitation to consider.

Frequently Asked Questions

Will the acetylene regulator fit my large shop tank?
The acetylene regulator only fits small acetylene MC tanks with a CGA-200 valve and will not fit larger acetylene tanks.

Can I use these regulators with propane or disposable canisters?
No, the set is not compatible with propane tanks or disposable MAPP and propane canisters.

Are the outlet fittings compatible with standard twin welding hose?
Yes, the outlet thread is 9/16'-18 to accept 1/4 in B fittings used on twin welding hose.