I have aquarium check valves and I thought of that. The thing that would stop me from using one of them is the question of if the plastic and/or the glue that holds the 2 halves together would hold up to the fuel. NO, I just looked at one of mine and there's no way I'd trust an aquarium check valve to hold up to the chemical content of the fuel or the pressure involved, no way....Whoever was discussing it wherever you saw it before apparently didn't have aquariums*. Doesn't matter, being the kind of guy that doesn't mind spending the extra buck to keep my piece of mind I'm going to get it anyway. But thanks for the heads up............

*Speaking of aquariums, they were my hobby before I got into RC. I still have them, just not into the corals anymore. I had people from all over the world in saltwater reef clubs comment on my site that my reef tank was the most beautiful they had ever seen(beaming with pride here). It was amazing that everything in there was alive, also amazing that the lighting alone was over $1000 and had to be replaced every 4 months even though it still "looked" good. LOL So now I spend that on RC stuff.........
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