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Old 11-08-2022, 00:31   #1
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Lavac vacume head

Problem; holding tank 90% full of saltwater. Instructions call for 9 then 5 pump strokes of water. Hence holding tank mainly full of water. Can you minimise the number of strokes to cut down on water in the holding tank? And make pump outs further apart
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Old 11-08-2022, 16:19   #2
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Re: Lavac vacume head

Why not just try it? Pump less, if toilet is clear then it worked...

Collecting data could happen faster than collecting opinions...
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Old 11-08-2022, 17:06   #3
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Re: Lavac vacume head

We have Lavac heads and have had this problem.

Put a bit of water in the bowl before using, just enough so stuff dosen’t stick. We just run in a a pint of fresh water. Then we get by with 6 pumps +/-.

Thank Peggy for that one.

Pee overboard.

Thank me. LOL

Fortunately we have 2 heads, urine goes overboard, other stuff in other head. Having a single head is a much bigger problem.

But also one head has a Purasan, which gets the solids. Thus we have a similar issue to you as Purasan requires no more than 6 strokes. But you loose the holding tank. And if you want to flush the system you can run
a couple of cycles with no additional inout and then just pump water through.

Separating urine from solids is huge.
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Old 14-08-2022, 09:47   #4
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Re: Lavac vacume head

Check the holes in the inlet hose or poke a few more. More holes and the vaccum clears quicker => less water in the bowl to pump out.
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