Victor reverse flow check valves
Prevents a flame from traveling past the flashback arrestor in the event of a flashback. Specific design to prevent mismatching of oxygen and fuel. The use of both regulator and torch mount flashback arrestors with heavy industry equipment requiring high gas volume is not recommended because it may cause excessive flow restriction. It is always better to place the safety devices at the rear of the torch than at the regulator in order to protect the hose.