Flash Back Arrester Acetylene 3/8″
A crucial safety device for acetylene lines with 3/8″ left-hand threaded connections. It prevents reverse gas flow and stops dangerous flashback flames from reaching the acetylene source using a non-return valve and flame arrestor. May include a thermal cut-off. Essential for safe oxy-fuel operations. Must be specifically designed for acetylene (left-hand threads).
R150.00
A flashback arrester for acetylene with 3/8″ connections is a vital safety device designed to prevent the reverse flow of acetylene gas and, critically, to stop a flashback flame from traveling back through the hose and potentially reaching the acetylene cylinder or regulator, preventing dangerous explosions.
Key features typically include:
- Non-Return Valve: Prevents acetylene from flowing back towards the gas source.
- Flame Arrestor: A porous metal component specifically designed to extinguish a flashback flame by dissipating its heat.
- Thermal Cut-off Valve (Optional): Some models may include a heat-sensitive valve that automatically shuts off the gas flow if a sustained flashback causes excessive heat.
- 3/8″ Connection: Indicates the thread size and type of the inlet and outlet fittings, ensuring compatibility with standard 3/8″ acetylene hoses and equipment. These are typically left-hand (LH) threads to prevent accidental connection with oxygen lines.
- Durable Construction: Usually made of brass or another robust material suitable for fuel gas service.
- Specific for Acetylene: Designed and marked for use with acetylene only, as oxygen flashback arresters have different internal components and right-hand threads.
- Mounting Location: Can be designed for mounting at the regulator end, the torch end, or sometimes inline.
Using a flashback arrester on your acetylene line is a mandatory safety precaution in oxy-fuel welding and cutting operations due to the flammable nature of acetylene.