A flashback occurs when mixed gases within a cutting and welding blowpipe system ignite and burn back through the system against the flow of gas. The consequences of a flashback range from sooting of the hose, to serious equipment fires and possible explosions. The flashback can travel at supersonic speeds - faster than the operator can turn off the cylinder! So, if you hear a loud “pop” or “bang” then flashback has already occurred. Flashback arrestors when used & fitted correctly virtually eliminate the possibility of a flashback causing harmful damage.
NV - Non-Return Valve prevents the reverse flow of gases (Torch & Reg Mount)
FA - Stainless Steel Flame Arrestor extinguishes any returning flame (Torch & Reg Mount)
TV - Gas flow will shut-off if the arrestor overheats (Reg Mount Only)
