Larger suction pipe to pump - better?
All inside tubes, inlets on the pump, and suction tube from fresh tank are 1/2". 3GPM pump, 40 PSI on the push side, self-priming up to 10ft (I think). Now, imagine fresh tank 6ft away, sitting on...
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No, it won't change delivery rate on the pump output. If you have a loss of pressure, elevate the aux. storage tank. The small diaphragm pumps used in most RV's do not have a big pump head lift. You could also put a bigger pump on the aux tank and use that through the utility fitting input.
