Originally Posted by sailorboy1
I get tired of using the wet/dry vac and was searching the internet
for something else for that last 1/2" of water
and this thread came up.
Maybe someone has an answer.
I'm thinking maybe a little peristaltic hose pump. Low amps and can be run ddry so just leave it on all the time.
To really get that last bit of water you need a diaphragm
pump that can pump dry. The downside is that they don't move water very quickly and are really only useful for that last little bit. So you need a system, not just one pump.
Ideally you would have three classes
1) A diaphragm
for small amount on water. The smaller the better really. We use a 6gph pump for this. Ideally they are located out of the bilge
and discharge directly overboard
. But since the flow is so slow they can be plumbed to something else. In our case the sink stand pipe.
2) The normal drop in cartridge pump. Reasonable flow, and large hoses will move a decent amount of water. This is what most people think of when they talk about bilge pumps
3) A trash pump. Powered either by a PTO from the engine
or its own gas engine
. These will move tens of thousands of gallons an hour. This is the only thing that will stop a boat from sinking if you get a hole.
Of course on a small boat it may not be reasonable to invest in all of this, and the related hoses and maintenance