Dump Valve Lubricant
I've recently replaced the slide valve seals on the black water tank. check for leaks and none seen. The valve seems to be a little harder to operate when no liquid is in the tank. I don't believe the...
Forum Discussion
larry barnhart wrote:
When our black water valve becomes hard to pull and push I drain the tank and pour a gallon of vegetable oil down the toilet and wait for as long as I can and then pull and push as fast as possible as the oil drains though the valve. Has worked for every time.
chevman
This is actually the best way to deal with this issue and the way that is recommended to keep all rubber seals from toilets to water supple on Sailboats.
Although a gallon is a bit much I think. A little bit that will sit at the valve for a while is enogh if done periodically. Like a cup.
