The intake side should be almost twice the flow area of the output. (Not twice the diameter!!) The area of 1/2" pipe is about .19 sq inches the area of 3/4" pipe is .44sq inches. The reason for this is because the suction side depends on air pressure to push hydraulic oil into the pump, if restricted at all, the pump cavitates and that can ruin it, as well as restricting flow. The pressure side has pressure forcing it through the hose. It is the same reason intake valves are bigger than exhaust valves. Jim
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Today's Featured Article - Choosin, Mounting and Using a Bush Hog Type Mower - by Francis Robinson. Looking around at my new neighbors, most of whom are city raised and have recently acquired their first mini-farms of five to fifteen acres and also from reading questions ask at various discussion sites on the web it is frighteningly apparent that a great many guys (and a few gals) are learning by trial and error and mostly error how to use a very dangerous piece of farm equipment. It is also very apparent that these folks are getting a lot of very poor and often very dangerous advice fro
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