I put a lawn sprinkler valve and float on the supply side of mine and it
works flawless.
24v valve $15.00 (Home Depot)
magnetic float switch $6.00 (bought on e-bay)
24v transformer (a door bell transformer is cheaper than the one they sell
for the sprinkler valve) $12.00 (Home Depot)
bell wire 100' $10.00 (Home Depot)
David Young
"Marc Levenson" wrote in message
...
What you are desribing sounds a lot like a ASOV (Auto Shut Off Valve).
When you
close the supply side, the waste side turns off in 15 to 30 seconds. If
it is
still running, the ASOV may need to be replaced.

The ASOV has 4 tubes going into it, so when replacing it is important to
put
them in the correct order.

There is also a tiny check valve that comes out of the RO membrane housing
that
I don't completely understand (grin) but if it is faulty, the unit won't
turn
off.

Marc


Dragon Slayer wrote:

guess the newer versions have improved. all the older ones I have had
or
dealt with had a valve that was called a "shut off" that used two lines
to
turn off the waste when the lever was moved to the off position.
without
the waste water hooked to it they always ran waste water out.

how does the newer ones work?

kc

"Marc Levenson" wrote in message
...
Once the supply side is stopped, the waste line should stop with 30
seconds.

I like Kevin's method even better.

Marc


Dragon Slayer wrote:

A Kent Float Switch is $15.

it doesnt cut off waste water, but would keep the overflow from
happening.

kc

--
Personal Page:
http://www.sparklingfloorservice.com/oanda/index.html
Business Page: http://www.sparklingfloorservice.com
Marine Hobbyist: http://www.melevsreef.com



--
Personal Page: http://www.sparklingfloorservice.com/oanda/index.html
Business Page: http://www.sparklingfloorservice.com
Marine Hobbyist: http://www.melevsreef.com