Sinking Soap

[rebapuck]

A couple of years ago, I installed a new kitchen faucet set. I replaced the small soap dispenser bottle with a new tube threaded through the cap of a large jug of soap on the cabinet floor. Worked great. Until it started sputtering soap. I figured out the tube was too long. It hit the jug bottom and curled up. Eventually the soap level was lower than the tube end. I fixed that. Worked great again....for awhile.

Now, I have to pump and pump and pump everytime I use the dispenser. Why is the soap sinking down the tube? Do I need to make the cap airtight? Let air in?
Raise the jug to shorten the travel? Top off the soap? This has got to have something to do with physics. Not my strong suit.

[pchast]

It could be a couple of things:
First there could be an air leak in the hose or pump...
Then, more likely, soap has dried up in the pump keeping the
valves from sealing properly.

The first thing I'd do is to remove the bottle and run a bunch
of hot water through the pump... Wash it out.

good luck with it.

[rebapuck]

I'll try that. Thanks.

[Jiminsav]

those pump action soap tops eventuall wear out and quit working..like eveerything else made in china.
and appearently, my keyboard..damn big lots crap

[pmowers]

You definitely do not want to make the cap air tight- that would set up a vacuum guaranteeing that the soap would be pulled back into the tube.

[rebapuck]

pmowers,

I opened the soap jug cap to let maximum air in. Seems to have solved my problem. Thanks.

[louis c]

Some of the dental cabinets we install have a soap dispenser with a adapter to use a gallon jug of soap, and they put a check valve in the tube to keep the soap from running back to the jug, maybe you could get a check valve for it