How do you select a flashback arrestor?
Selection: Choose the proper size device, paying particular attention to required equipment gas flow rates and the flow information supplied with the flashback arrestors like P charts. Features like thermal shut offs may also influence device selection.
Do I need a flashback arrestor for acetylene torch?
Never connect a torch to acetylene and oxygen tanks without installing a set of flashback arrestors in the hoses at the regulators. Without these safety devices, it is possible a flash can occur within the hose, and ultimately follow back into the tanks, causing an explosion.
When should flashback arrestors be used?
A flashback arrestor or flash arrestor is a gas safety device most commonly used in oxy-fuel welding and cutting to stop the flame or reverse flow of gas back up into the equipment or supply line. It protects the user and equipment from damage or explosions.
Are flashback arrestors required?
4. Why aren’t flashback arrestors required by law or in the U. S., OSHA safety regulation? Answer: OSHA has cited employers for failure to use flashback arrestors under the broad federal regulation 29 CFR 1910.252, failure to recognize the responsibility to provide for the safe use of gas cutting and welding equipment.
How long do you purge torch hoses before use?
Purging Your Torch Hold the cutting lever open for 5 seconds, then shut the oxygen valves and repeat for the fuel gas side.
What is the difference between check valve and flashback arrestor?
What’s the difference between a check valve and flash back arrestor? A check valve can only prevent the reverse gas flow. However, a Flash Back Arrestor prevents reverse gas flow AND arrests the flashback. A check valve cannot arrest a flash back.
Do you really need flashback arrestors?
It protects the user and equipment from damage or explosions. These devices are mainly used in industrial processes where oxy-fuel gas mixtures are handled and used. Flashback arrestors as safety products are essential to secure the workplaces and working environment.
When should flashback arrestors be replaced?
Replace pressure regulators and flashback arrestors every five years after the manufacturing date to prevent degradation and leakage.
What pressure should I set my cutting torch?
between 5-15 psi
NOTE: Most torch mixers use a “positive” design that requires fuel gas pressures set between 5-15 psi for cutting applications. However, some torches use an injector (low pressure) mixer design that only requires ¼ – 2 psi of alternate fuel gas.