Yes! You need a flashback arrestor.
My DWP has been distracted a few times and turned on her Mega Minor (oxy first, THEN propane) and gotten a loud crack/pop.
This can only mean one thing.
Make sure you have a flashback arrestor protecting your PROPANE TANK.
I know some folks will say that a hose flasback arrestor is the think to do. But in my opinion, guard the PROPANE TANK with your life - hence, purchase a regulator flashback arrestor.
Or you can also order the set (regulator and hose arrestors) from
ARROW SPRINGS. They have a great price on this package! (Make sure you also order a set of quick connects to make your life easier).
Flashback Arrestors
American
Complete 2 Piece Set ..... $65.00 Part# FLASHAR-USA
1 Piece Oxygen Only ..... $34.00 Part# FLASH-OXYUSA
1 Piece Fuel Gas Only ..... $34.00 Part# FLASH-PROUSA
Import
Complete 2 Piece Set ..... $30.00 Part# FLASH-CHIN
1 Piece Oxygen Only ..... $15.00 Part# FLASH-OXYCHN
1 Piece Fuel Gas Only ..... $15.00 Part# FLASH-PROCHN
Best wishes.
In Christ: Raymond