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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I don’t think the “weight” of the water has any effect. Pumps don’t actually “suck”, they create a low pressure which allows atmospheric pressure to push the water to the low pressure area. A larger pipe hs a larger cross section for the 14.7 PSI pressure to act against.
That is the exact reason that most pumps cannot lift water more than approx 33 feet.
That is the exact reason that most pumps cannot lift water more than approx 33 feet.
