in line one way check valve for fuel breather

[was a 75]

what are people using to prevent fuel leaking out the breather hose in roll over? i have a petrol v8 conversion but stuck with original diesel tank and just ran fuel hose with filter on end from the tank breathers. i have noticed i can see the petrol vapours from the end of these breather hoses and it has occurred to me if the truck rolls fuel will more than likely run out, nek minnit theres a fire. so, is running an inline one way check valve in the breather lines a good idea or is there something else people use? thanks

[big38l]

Google rollover valve and that should get you results.

[was a 75]

cheers

[evanstaniland]

dont get a ball style one. if your on your side the ball will float not block it off. you want like a diaphragm style one so when the pressure in the tank builds itll unseat and purge