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Old 13-11-2024, 09:30   #1
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Dry bilge without an extra pump or timer to maintain

Looking to over complicate my boat I have found myself interested in drying my bilges out totally. I am aware of the dry bilge products but the reviews are mixed and the general idea feels like overkill. My vessel is a catamaran which would require 2 units as the tiny pumps lack the strength to pull as high as I am looking to go.

So has anyone looked into using an exiting system onboard as a vacuum?

Has anyone looked into tapping into the existing raw water feed for the head to be used as a vacuum system? Not that I'm looking to mess with the vented loop but its easy to feel suction on those systems.

Could you not add a venturi valve up high and after the vented loop to be used to suck out any remaining water in the bilge? Obviously flooding is the concern which is why I'm asking if someone has experimented.
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Old 13-11-2024, 09:44   #2
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Re: Dry bilge without an extra pump or timer to maintain

The best way to have a totally dry bilge is to fix the leaks.
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Old 13-11-2024, 10:10   #3
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Re: Dry bilge without an extra pump or timer to maintain

Interesting idea. I'm just going to build 2 DIY systems. A buddy of mine built one for his mono hull. Ran 1 tap into the fridge/freezer with a small shutoff valve. Makes defrosting so much easier.
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Old 15-11-2024, 03:32   #4
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Re: Dry bilge without an extra pump or timer to maintain

Creating suction off from the show drain pump removes the flooding possibly that would be my biggest concern for the head.
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