Lubricating the Push-Pull Black Water Valve?

DutchmenSport wrote:
Well, don't waste your money on the stuff you pour down your toilet and it's suppose to lube the slide valve. I think that was the biggest waste of money I ever spent on any of my campers. I tried two bottles, and it never made any difference.

Well I found exactly the opposite ... Thetford Drain Valve Lubricant made my next to impossible to move black water valve move easily. :B

Well, don't waste your money on the stuff you pour down your toilet and it's suppose to lube the slide valve. I think that was the biggest waste of money I ever spent on any of my campers. I tried two bottles, and it never made any difference. So, in my opinion, that is just a bunch of snake oil, a way to get you to separate with your money. Shoot! It didn't even work on the slade valve in my toilet bowl. That dang thing still stuck.


Here's what you are talking about from Trailer Life Magazine, 10 minute tech: I've never done this because my slides are all enclosed. I've have to cut the colorplast to access them. Sounds logical though, like it might work.

Click here.

Some of the waste tank deodorizer products say they lubricate the valves. I don’t know how effective they are. I have had relatively good success in just lubricanting the metal shafts with either a spray silicone lube or a grease. WD40 is a good cleaner but not a lube. There really isn’t much you can do when the valve is in the closed position.

Search this Forum for `Black Tank Valves' and read the suggestions. Depending on how old is the rig you might want to consider replacing the valve with Valterra. If the handle does not have a name on it it is probably a Bristol.