siphon

[spokes]

I installed a one way check valve a NAPA Eichlin product between the
bubbler and generation jars. I still seem to be getting back flow
after the unit is shut down.
Any ideas?

[Dave]

What is your system? Is it a closed "dry" cell type or plates in a
bucket type?

If a dry cell (recirculates the electrolyte) then be sure that your
out or gas side line loops so that it is higher than the fluid return
side. This will prevent the siphon effect from starting.

If a plates in a bucket approach, then try a 12vdc normally open
relay valve. wire it so that it is energized (i.e. closed) when
power is applied to your cell. When the power to the cell is turned
off then the relay valve will automatically open preventing the
siphon action to start when the cell cools.

Hope this helps.

Bro. Dave Brown, OBB
Green Bay Monastery, WI

[Bruce]

I have experienced some of that as well.
I initially thought the check valve would stop it, it slowed it way
down but some is still pulling back.

I think we may need the dripper installed.
We use the dripper on the systems installed to vacuum to balance the
vacuum.

I think the generators are creating enough vacuum on their own that
the dripper will balance that.
Just a thought, I haven't tried it yet.

The dripper is a sprinkler head dripper purchased at lowes and a tube
installed to the bottom of the generator so as not to create a leak
but allow air in.

[Waynetn]

I personally consider this effect a plus. It keeps the level in my
cells as high as possible, allows short cells, and requires only a
sight glass in the bubbler.

The cells will push water into the bubbler to create just enough head
space, while they are warming up.

Of course, my bubbler is filled with the same mix as the cells.

Tight spacing keeps the concentration requirements very low.

Wayne