Originally Posted by Privilege
As an (ever so slightly) thread thrift, you realize that a 3/4" diaphragm pump is going to pump significantly lower water
than a 1 1/8" centrifugal pump?
I have a Whitby 42 which originally had a keel fuel tank
that are known to leak. The previous owner removed it which left me with a very deep narrow bilge that is nearly impossible to clean. The centrifugal pump didn't move much water because it had a lot of head
to overcome and failed shortly after I purchased the boat
. The new one will move less water but it should be much more reliable. I also have two centrifugal pumps in the normal accessible bilge area to do the heavy lifting.
From what I can find for adapters, it looks like most people are using a 1" to 3/4" and just clamping it tightly which should work
. I haven't been able to find an actual 1-1/8" adapter. It would be nice if bilge pump manufactures would use a standard size of either 1" or 1-1/4".