11-04-2009, 07:33 AM
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Well you have a lot of options.
Put a Tee at the pump in the sump, then put a ball valve on the TEE. You can then bleed off some of the return back into the sump from the Tee. So basically at the base of the pump where the return line comes off you tee that off and redirect it back to the tank, this way you bleed off extra flow without creating back pressure.
You can put a ball valve on the return line and restrict flow, but this create back pressure, however most pumps can handle this.
You can add extra truns in the piping slowing the flow down. You can increase the size of the return line little by little like a reverse funnel, thus giving your the same or lower gph but much lower pressure which is what really is causing the current.
You can use a spray bar to distribute the flow.
The list goes on.