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Old 06-09-2012, 08:58 AM   #21
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City: Brentwood Bay, BC
Country: Canada
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Vacuflush Spares

Thanks - will bookmark the page and check next time I need spares. My system is still holding vacuum and haven't had to dive into the duckbills.

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Old 08-21-2012, 10:41 AM   #22
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City: LaPaz ,Mexico and the Sea of Cortez
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Vessel Model: 1988 58' Vantare
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OK new question on thses devices, I have two of these devices both going to a common holding tank, and for the most part they have run fine for the past two years. Yesterday walking into the engine room, I noticed a lovely odor and traced it to the generator pump for the rear head.

It appeared to be working (?) but leaking on the top where I can see the top of the piston, that goes up and down. At this point I'm looking for directions on how to rebuild it and why when it fails would it leak out the top ?

I understand the need to replace the duckbills and have those on board, but before tearing it open, whant to know if there are other products needed...and maybe why it leaked out of the top.

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Old 08-28-2012, 08:24 PM   #23
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If the 'stuff' is leaking out the top then there are a few things I can think of that means:
-the diaphram/piston/bellows has a leak requiring replacement
-the diaphram/piston/bellows has a damaged seal allowing 'stuff' to get past
-the 'o' ring sealing the pump top has split or hardened.
-the screws, or at least a few of them, that hold the top on have backed out allowing leakage

There are several possibilites that can allow top leakage and will require some disassembly to figure out which part is the problem.

As for the duckbills on my 'T' pump I found a couple years ago that the tank didn't empty fully so we overflowed it later. I realized later the duckbills were old enough that they were no longer operating fully, they were not closing fully, causing the pump to pump less than I thought. Result, a not empty tank. It took nearly ten years to reach that point though. The new duckbills restored the pump to its old capacity.

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head, spares, vacuflush

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