Originally posted by DavidK
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Rotaries don't need positive head, so long as you stick a check valve in the line and avoid running your tank dry you can draw directly from the tank. Lose the "booster" pump.

). Connecting it to mains waterline is not a cost effective option at the moment so i resorted to running my beloved machine from a water tank with external diaphragm pump to produce positive head. 
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