Do you guys think a check vale is enough to stop a fire chasing back into the hoses or solenoids? Check valves flow better than flashback arrestors for sure and have a small footprint as well as I see in millman52's pic! That would be problem solved. I should add why I am trying to figure it out. I had a fire run back through to some solenoids and ruin them. The fire stopped at the FBAs (which were hooked to the intake side of the solenoids). The reason it happened was a loose tip. I could hear the tip snapping fast and hard from my office and by the time I got my butt out there it was sending out smoke signals. Employees are expensive sometimes. He survived, as current federal and state laws forbid me from knocking him off his perch.
WSS
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