Tartan 27' owner
Join Date: Jan 2008
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Re: submersible vs non-submersible bilge pump
Shout from left field here!
We had a diaphragm pump for our bilge pump when we bought our boat. Worked fine for a number of years then stopped working. Bought the re-build kit (for more then a cheap Rule pump costs) and couldn't make the old diaphragm pump work. Bought a new Jabsco diaphragm pump (for 5 times more then a submersible Rule pump) that worked for a while. Bought the re-build kit and, yup, you guessed it, could not make the new diaphragm pump work.
You can buy 5 Rule centrifugal pumps for the price of 1 diaphragm pump. Our crappy Rule submersible has been working yeoman's duty for about 3 years now. When it dies I will buy a new one for much less then the price of a rebuild kit for a diaphragm pump.
Diaphragm pumps are great for moving CLEAN water around (shower sump, pressurized water) but I won't trust one as a bilge pump EVER again.
Edit to add: 27' keel boat owner for over 10 years. Mechanically capable, but apparently not with diaphragm pump rebuild kits.
"The cure for anything is salt water~ sweat, tears, or the sea." ~Isak Denesen
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Last edited by CalebD; 08-06-2012 at 12:23 AM.