汽油切割机从汽油罐到割嘴都是液体，汽油罐，液体是不回火的（扯淡所以本机*不会发生回火现象）即使对汽油罐内汽油直接点火也只能使汽油缓慢燃烧，不会发生剧烈燃烧和爆炸。（装了该防爆材料的油罐甚至可带油对油罐进行补焊缺口）。直至耗尽输油管中的汽油而不会发生汽油飞溅导致火患危及人身安全的险情，这是其它汽油割炬所无法匹敌的。汽油罐上配有常压恒定安全阀，一方面能够消除汽油罐在封闭状态下长时间工作后罐内所产生的负压，另一方面能*汽油罐不小心倾倒时罐内的汽油不会泄露出来。（图/文http://www.wxfengli.com/）
（中译英）
Gasoline cutting machine to cut from the gasoline tank mouth is liquid, liquid is not tempered ( nonsense so the machine will never happen to backfire phenomenon, gasoline tank filling to the national Ministry of public security, the Ministry of labor recommend high-tech material, even on the gasoline tank of gasoline direct ignition can make gasoline burn slowly, not burning and explosion. ( with the explosion-proof material tank even with oil on the tank repair welding gap). Until exhausted oil pipe of gasoline instead of gasoline splash lead to fire endangered the personal safety of danger, which is unmatched by other gasoline cutting torch. Gasoline tank with a constant pressure safety valve, one can eliminate the gasoline tank in a closed state after long time working tank produced by the negative pressure, on the other hand, can guarantee the gasoline tank accidentally dumped when the tank of petrol will not leak out.