Join Date: Apr 2011
Location: Oriental NC
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Re: Rule Bilge Pumps
For maintenance pumping you do not need high volume.
As an example (excuse the very rough math): My bilge pump switches on once every 2 days or so, runs about 30 secs, rated at 650gph. If I put a 65gph pump in there it would run ~5 mins every 2 days. no big deal even at the worst case.
In your case you are very height constrained. Caleb's idea, to cut a hole in the cabin sole for a small Rule pump, is a good one. However if that is not an option, it seems that you can eliminate the possibility of an inexpensive impeller pump. In that case it seems you are stuck with the more expensive remote diaphragm pumps, of any capacity (assuming this is just maintenance pumping) you can find.
For the record though I never feel comfortable with just one pump. In the bilge I have 2 automatic pumps (small Whale supersub, a large rule mounted higher in the bilge)
So whatever you go with, consider going with two of them.