I guess I should get the flashback arresters for my Little Torch
(oxy/propane). I don't understand why they were not simply
included in the kit (caddy, tanks, torch, regulators, but no FAs).
Any preference among the experts over "torch end" or "regulator
end" and why?
This should be simple…if you use a torch that mixes a fuel gas
(acetylene, propane, MAPP, natural gas, etc.) with high pressure
oxygen then you should have flashback arrestors on both the fuel gas
line and the oxygen line, all the time, one every torch.
UL Listed flashback arrestors usually combine a flashback arrestor
with a check valve and come in two types - regulator mount and torch
mount. They both do the same thing - the difference is which
direction gas flows through them and where they are installed on the
gas and oxygen lines. Putting the wrong type in the wrong place
blocks gas flow to the torch.
Regulator mount flashback arrestors screw right onto the regulator
on your cylinder or gas line. Torch mount flashback arrestors are
attached to your torch. Many jewelry torches do not have the fittings
for flashback arrestors to be attached so regulator mount flashback
arrestors can be installed in the gas line itself.
New York City has recently changed its Fire Code to require
flashback arrestor checkvalves on all jewelers’ torches and my
company has prepared a brochure with photos and text explaining the
diference in regulator-mount and torch-mount flashback arrestors, and
how to install them. If you would like a PDF of this brochure please
contact me off-line at @ehoward and I will e-mail a copy
G-TEC Natural Gas Systems