RX WELD Oxygen and Acetylene Regulators Review
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By Garage Welding Editorial Team
Last Updated: June 1, 2026
The RX WELD Oxygen and Acetylene Regulators are made for light gas welding and cutting setups that use a V-style torch kit. This set includes one oxygen regulator and one acetylene regulator. The oxygen side uses a CGA-540 tank connection. The acetylene side uses a CGA200 connection for small MC acetylene tanks.
This review focuses on the RX WELD PC-Handle regulator set with ASIN B0CKQYTJK1. It does not cover the CGA510 version for larger acetylene tanks.
Quick Verdict
The RX WELD Oxygen and Acetylene Regulators are a good match for buyers who need a small oxygen and acetylene regulator set for a V-style torch kit. The main strength is simple compatibility with CGA-540 oxygen tanks and small CGA200 MC acetylene tanks.
The main limit is important. The acetylene regulator fits only small MC acetylene tanks with a CGA-200 valve. It will not fit larger acetylene tanks, propane tanks, or disposable MAPP/propane canisters.
Key Specs
| Feature | Verified Detail |
|---|---|
| Product | RX WELD Oxygen and Acetylene Regulators |
| ASIN | B0CKQYTJK1 |
| Brand | RX WELD |
| Manufacturer | RX WELDER |
| Model / Part Number | RX45OA-PC |
| Style | PC-Handle |
| Oxygen Inlet Connection | CGA-540 |
| Acetylene Inlet Connection | CGA200 |
| Outlet Thread | 9/16″-18 for 1/4 inch B fittings twin welding hose |
| Oxygen Pressure Range | 0-4000 PSI inlet, 0-100 PSI outlet |
| Acetylene Pressure Range | 0-400 PSI inlet, 0-30 PSI outlet |
| Material | Brass body |
| Item Weight | 3.25 pounds |
| Package Dimensions | 12.05 x 6.38 x 4.76 inches |
| Included Items | 1 oxygen regulator, 1 acetylene regulator, PC-Handle, outlet hose connector nut |
What Is This Product?
The RX WELD Oxygen and Acetylene Regulators set is made for controlling oxygen and acetylene gas pressure in a compatible gas welding or cutting setup. It is listed for V-style welding gas torch cutting use.
The set includes two regulators. One regulator connects to an oxygen tank with a CGA-540 connection. The other connects to a small acetylene MC tank with a CGA200 valve.
The outlet thread is 9/16″-18. It is made for 1/4 inch B fittings twin welding hose. Buyers should check their hose, tank valve, and torch kit before ordering.
Who It Is For
- Buyers who use a V-style welding or cutting torch kit.
- Users who need a CGA-540 oxygen regulator.
- Users who need a CGA200 acetylene regulator for a small MC acetylene tank.
- DIY users who want a basic oxygen and acetylene regulator pair.
- Light-duty welding and cutting users who already have the correct tanks and hoses.
Who Should Skip It
- Skip it if your acetylene tank uses CGA510 or another larger-tank valve.
- Skip it if you need a regulator for propane.
- Skip it if you need a regulator for disposable MAPP or propane canisters.
- Skip it if your hose does not use 9/16″-18 B-size fittings.
- Skip it if you need verified industrial-duty specs beyond what the listing shows.
Key Features
CGA-540 Oxygen Connection
The oxygen regulator uses a CGA-540 inlet connection. This is the tank-side connection listed for the oxygen regulator in this set.
CGA200 Acetylene Connection
The acetylene regulator uses a CGA200 inlet connection. This is for small acetylene MC tanks with a CGA-200 valve. This is not the version for larger acetylene tanks.
9/16″-18 Outlet Thread
The listing shows a 9/16″-18 outlet thread for 1/4 inch B fittings twin welding hose. This matters because a wrong hose connection can stop the setup from fitting correctly.
Two Pressure Ranges
The oxygen regulator is listed with 0-4000 PSI inlet pressure and 0-100 PSI outlet pressure. The acetylene regulator is listed with 0-400 PSI inlet pressure and 0-30 PSI outlet pressure.
Brass Body
The regulator body is listed as high-quality brass. Brass is commonly used for gas regulator bodies because it is durable and suitable for gas-control parts.
Real-World Use
In real use, this set makes the most sense for a small oxygen and acetylene torch setup. It is useful when your oxygen tank, small MC acetylene tank, twin hose, and V-style torch kit all match the listed connections.
The pressure ranges give users control over oxygen and acetylene flow for compatible welding and cutting tasks. However, the regulator does not make an unsafe or mismatched setup safe. Tank valve type, hose fitting size, and torch type still matter.
The acetylene warning is the most important buyer point. The listing says the small acetylene regulator fits only small acetylene MC tanks with CGA-200 valve. It will not fit larger acetylene tanks, propane tanks, or disposable MAPP or propane canisters.
Pros and Cons
| Pros | Cons |
|---|---|
| Includes both oxygen and acetylene regulators | Acetylene side fits only small MC tanks with CGA200 valve |
| CGA-540 oxygen connection | Not for larger acetylene tanks |
| 9/16″-18 outlet for B-size hose fittings | Not for propane or disposable MAPP/propane canisters |
| Listed brass body | Warranty details are not clearly stated on the product page |
| Clear listed pressure ranges | Buyers must confirm tank and hose compatibility before buying |
Is It Worth the Price?
The RX WELD Oxygen and Acetylene Regulators set can be worth buying if it matches your tank valves and hose fittings. It gives you two regulators in one set, with clearly listed CGA-540 and CGA200 connections.
It is not worth buying if you have a larger acetylene tank, a propane setup, or disposable fuel canisters. In those cases, the wrong regulator can waste money and create a safety risk.
Do not judge this product by price alone. The better question is fit. If your setup needs CGA-540 oxygen, CGA200 acetylene, and 9/16″-18 B-size hose fittings, this set is a practical option.
Alternatives and Comparison
If you use a larger acetylene tank, look for an oxygen and acetylene regulator set with the correct acetylene connection for that tank. Many larger acetylene tanks use a different valve connection than CGA200.
If you use propane, choose a regulator made for propane. This RX WELD set is not listed for propane tanks or disposable propane canisters.
If you only need an oxygen regulator, a single CGA-540 oxygen regulator may be a better choice. This set makes more sense when you need both the oxygen and small MC acetylene regulators together.
Important Safety and Compatibility Notes
- Confirm your oxygen tank uses CGA-540 before buying.
- Confirm your acetylene tank is a small MC tank with CGA-200 valve.
- Confirm your hose uses 9/16″-18 B-size fittings.
- Do not use this set with propane tanks.
- Do not use this set with disposable MAPP or propane canisters.
- Check the current Amazon page or product manual for return and warranty details before buying.
Frequently Asked Questions
What tanks does this RX WELD regulator set fit?
The oxygen regulator is listed for CGA-540 oxygen tanks. The acetylene regulator is listed for small acetylene MC tanks with a CGA-200 valve.
Will this fit a large acetylene tank?
No. The listing says the small acetylene regulator fits only small MC acetylene tanks with CGA-200 valve. It will not fit larger acetylene tanks.
Can I use this with propane?
No. The listing says it will not fit propane tanks. It also will not fit disposable MAPP or propane canisters.
What outlet thread does it use?
The outlet thread is listed as 9/16″-18 for 1/4 inch B fittings twin welding hose.
What is included in the package?
The listing says the package includes 1 oxygen regulator and 1 acetylene regulator. It also lists a PC-Handle and outlet hose connector nut.
What is the model number?
The Amazon technical details list the item model number and part number as RX45OA-PC.
How heavy is this regulator set?
The Amazon technical details list the item weight as 3.25 pounds.
Does it have a clear warranty?
The Amazon page shows a warranty-information link, but it does not clearly show a fixed warranty period in the visible product details. Check the current Amazon page or contact the seller before buying if warranty coverage matters to you.
Can damaged regulators be repaired?
Do not use a damaged gas regulator. The Amazon listing does not clearly verify repair parts or repair service. Check the manual or contact the seller for safe service guidance.
Should I buy this regulator set?
Buy it only if your setup needs CGA-540 oxygen, CGA200 acetylene for a small MC tank, and 9/16″-18 B-size hose fittings. Skip it if your tank or hose connections are different.
Final Verdict
The RX WELD Oxygen and Acetylene Regulators set is a useful choice for the right small oxygen and acetylene setup. It has clear listed connections, clear pressure ranges, and a brass body. The package also includes both regulators, so it can be practical for users building or replacing a compatible V-style torch setup.
The biggest warning is compatibility. The acetylene regulator is for small MC acetylene tanks with CGA-200 valve only. It is not for larger acetylene tanks, propane tanks, or disposable MAPP and propane canisters.
If your tank valves and hose fittings match, this RX WELD set is worth considering. If they do not match, choose a different regulator set made for your exact gas and tank connection.
