Weldynasty HJSJ001 Acetylene Pressure Reducer with 60MPa Forged Brass Body & External Safety Valve
The Weldynasty 001 Series Acetylene Pressure Reducer is engineered for superior performance, safety, and energy efficiency in acetylene welding and cutting applications. Built with a high-quality brass forged body, a mirror-polished chrome-plated front cover, and precision-machined internal components, it delivers outstanding pressure resistance, smooth regulation, and long service life.
Key Features
Brass Forged Body with Chrome-Plated Cover: Pressure rating exceeding 60 MPa; mirror-polished, chrome-plated synthetic steel front cover.
Radial Gold Powder Explosion-Proof Gauge: Gold powder explosion-proof case with high-strength impact-resistant dial for dual safety protection.
Large Flow & Anti-Self-Flow Structure: High-flow high-pressure chamber ensures smooth performance and extended service life.
Brass Hot-Forged Inlet Nut: 35 MPa rated, free from pores or sand holes, withstands 50,000+ assembly cycles without slipping or breaking.
Copper Powder Metallurgical Penetration Device: Built into the inlet connector for unobstructed flow.
Premium Diaphragm & Stainless Steel Spring: Both tested to 25,000 fatigue cycles for smooth, stable pressure regulation.
UL-Standard Pressure Gauge: Passed 130% overpressure and 3,600 alternating fatigue tests; vibration and drop resistant.
External Safety Valve: Ensures more sensitive and accurate valve operation.
Specifications
| Item | Specification |
|---|---|
| Model | Acetylene HJSJ001 |
| Applicable Gas | Acetylene |
| Body Material | High-quality brass forging (>60 MPa) |
| Front Cover | Synthetic steel, mirror polished + chrome-plated |
| Inlet Nut | National standard brass hot forging (35 MPa, 50,000+ cycles) |
| Inlet Device | Copper powder metallurgical penetration device |
| Diaphragm | High-quality rubber (25,000 fatigue cycles) |
| Spring | High-precision stainless steel (25,000 fatigue cycles) |
| Pressure Gauge | Radial gold powder explosion-proof case; UL compliant |
| Safety Valve | External type, sensitive and accurate action |
| Packaging | 1 piece/carton, 16 pieces/case |
Usage Instructions / Operating Notes
Before Installation
Ensure the cylinder is upright and secured. Never open the valve on an unsecured cylinder.
Check the valve and inlet for oil, dust, or moisture. Stop if oil is found.
Briefly open the cylinder valve to blow out contaminants before installation.
Installation and Leak Testing
Turn the adjusting screw counterclockwise until fully loosened before installation.
Connect the inlet nut to the cylinder valve outlet and tighten securely.
Slowly open the cylinder valve and check the high-pressure gauge. Do not stand in front of or behind the regulator.
Apply soapy water to all connections and confirm no leaks before use.
Pressure Adjustment
Slowly turn the adjusting screw clockwise until the low-pressure gauge reaches the desired pressure.
If pressure is too high, loosen the screw to release gas, then readjust.
Never exceed the red warning value on the low-pressure gauge.
After Use
Close the cylinder valve first.
Release residual gas until the low-pressure gauge returns to zero.
Turn the adjusting screw counterclockwise to restore the spring to its free state.
Applications / Ideal For
Acetylene Welding and Cutting: Stable acetylene supply for torches.
Industrial Production and Construction: Suitable for manufacturing and construction sites.
Workshop and Repair: Ideal for metalworking shops and maintenance operations.
Gas Cylinder Pressure Regulation Systems: Reliable pressure control for cylinder-based setups.
FAQ
Q: What gases is this regulator suitable for?
A: Designed exclusively for acetylene. Never use with oxygen or other gases.
Q: Why must oil and grease be kept away from acetylene regulators?
A: Acetylene is highly flammable and can react dangerously with oil, grease, or other hydrocarbons. Always ensure the regulator and connections are completely oil-free.
Q: How do I know if the regulator needs repair or replacement?
A: Stop use if gas leaks from connections, the gauge does not return to zero, pressure cannot be adjusted continuously, the safety valve leaks, the gauge is damaged, or the body is severely corroded.
Q: What if the regulator freezes during use?
A: Thaw with hot water or steam. Never use open flame.
Q: What position should the adjusting screw be in before opening the cylinder valve?
A: Turn it fully counterclockwise so the spring is in its free state. Otherwise, instantaneous high pressure may damage the diaphragm and cause injury.
Q: What is the function of the safety valve?
A: It automatically releases pressure when outlet pressure exceeds 1.15–1.5 times the maximum output, then closes once pressure returns to a safe range.
Q: Does the regulator require periodic maintenance?
A: Yes. Annual professional inspection is recommended, and pressure gauges should be calibrated regularly.