Model D799 mystery pump
Model D799 mystery compressor pump
This is an auction purchase that I am using to replace a blown up pump on a newer 80 gal tank. There are a few model numbers cast into different parts, but the one on the crank case is "Model D799". "Made in the USA" is nice. I mostly want to know if i can spin this pump counter clockwise, since my 5 hp motor only spins ccw. The arrow on the crankcase seems to indicate otherwise, but if it won't affect the operation or lifespan then it will save me finding a different motor. It does seem to push plenty of air when you hand crank it in either direction.