Where should a flashback arrestor be installed?
(top) Flashback arrestors can be installed at the torch inlets, at the regulator outlets or both. Installation at the torch inlets has the advantage of being the farthest downstream, and so protects the hose and the operator the most. Installation at the regulator outlet is a cleaner location that is less subject to damage and fouling from dirt that can come from the hose. Regulator mounted units can also be larger, with greater flow capacity for high flow applications, without hindering the easy manipulation of the torch. Most Provinces in Canada have regulations that dictate the required location of flashback arrestors in the system. Users must follow the regulations in effect in their Province.
