Black water valve hard to open!

What I do with mine is when I have the tank empty, I will remove all fittings so I can have access to the valve gate inside the pipe and shoot it with silicone spray and work the gate back and forth a few times. Sometimes I will find tp stuck to the grooves the gate fits in and will remove that prior to spraying the silicone. Works for me.

Ron

When next time you empty, spray silicone lube on the handle shaft. If this does not do the trick, try what Ron suggested.

I put "mineral oil" into our tanks to lube the plate--seems to work.

Traveler II,
How much mineral oil do you use?

Ditto X10 on using Silcone Spray on rod.

First run a toilet or bottle brush around where the blade closes. Junk gets stuck in there and makes it hard to close. Of course only do this with the tanks empty! :W

Maybe this would help it?

https://www.youtube.com/watch?v=7pixVQyJqF4

are your camper's valves exposed or they in the underbelly and connected to the "T-handle" by a cable

Jim

After about eight years we had to replace ours and I had the RV dealer replace it with a Valterra model.

Don & Carolyn wrote:
Traveler II,
How much mineral oil do you use?

I use about a cup full every other time I dump the tanks.

rtz549 wrote:
Maybe this would help it?

https://www.youtube.com/watch?v=7pixVQyJqF4

The screw worked so good it was scary!!!!!