Where do flashback arrestors go on an oxygen acetylene torch?
Where do flashback arrestors go on an oxygen acetylene torch?
To prevent flashbacks, flashback arrestors must be installed on the outlets of both regulators, and/or torch inlets.
Why are flashback arrestors used on the acetylene torch?
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. In former times wet flashback arrestors were also used.
Where are flashback arrestors required to be fitted?
The OSH regulations require flashback arresters be fitted to each end of the hoses when using pressurised oxygen with a fuel gas. When using atmospheric air with a fuel gas, an arrester need only be fitted to the handpiece.
Do you need flashback arrestors?
“Suitable safety devices to prevent reverse gas flow and to arrest a flashback must be installed on each hose in an Oxy-fuel system, between the torch and the regulator.”
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.
Are flashback arrestors reusable?
Flashback Arrestors are designed to stop flashbacks by preventing ignition of mixed gases and to protect equipment such as hoses, regulators, torches and cylinders. Flashback Arrestors are 100% tested, color coded for gas service, and are reusable.
What is the maximum pressure on the torch side for acetylene?
The maximum working pressure for acetylene gas when using a cutting torch is 15 psi or 103.4 kPa.
How many types of flashback arrestors are there?
Two main types of flashback arresters are available in the market: Wet (Hydraulic or Liquid) Flashback Arresters.
What cutting flame should you use?
The neutral flame is the flame most generally used when welding or cutting.
What pressure should I set my cutting torch?
In case the recommended working pressure settings are not indicated, safe numbers are 40 psi for oxygen and 10 psi for acetylene, regardless of tip size. Simply adjust them until you get a neutral flame, but pay close attention to the pressure to prevent it from exceeding the limit.
How do you use a acetylene torch safely?
If using acetylene, keep the pressure below 15 pounds. Purge your hoses before lighting the torch. Never light your torch with a mixture of fuel and oxygen. After purging the lines, light the torch with only the fuel gas valve open. Check valves should be installed on both torch inlets and operating properly.
Where are flashback arrestors required on a torch?
To prevent flashbacks, flashback arrestors must be installed on the outlets of both regulators, and/or torch inlets. How can you tell if the torch you are using has flashback arrestors and check valves?
Why do I need a high volume arrestor on my torch?
In situations where high volumes of gas are needed, (e.g. heating steel) the arrestor (by design) will restrict the volume. This can cause the gases to creep back into the torch and possibly create a flashback. In these cases, it is better to put high volume arrestors on the regulator.
How do you stop a torch from exploding?
There are several things you can do to help prevent flashbacks, fires and explosions: If using acetylene, keep the pressure below 15 pounds. Purge your hoses before lighting the torch. Never light your torch with a mixture of fuel and oxygen. After purging the lines, light the torch with only the fuel gas valve open.
