Replacing dump valves

[Poki]

I just replace a very hard to open black tank valve. It took 3 tries to get it in without pinching the seal. Later, I was wondering if I should have lubricated the new valve in any way befor putting it in to keep it operating better longer?

[Poki]

I just replace a very hard to open black tank valve. It took 3 tries to get it in without pinching the seal. Later, I was wondering if I should have lubricated the new valve in any way befor putting it in to keep it operating better longer?

[RV Wizard]

You can add a valve lubricant that contains a coconut oil after cleaning the tanks. I think Camco is one brand of lube that I have use. Also good for toilet valve seal too.

[Bruce, wife, & pet rabbit Jett]

I've seen some dump valves with a zerk fitting. I'm not sure if this was normal or if people have added them. I don't think you'd use normal grease, but I've seen stranger things.

Personally, we use the tank chemical with the lube built in.

[JudyandJim]

Our valve pulls were getting really hard to use, so a couple of weeks ago I began using Thetford Valve Lubricant. For the initial application I added the lubricant and then filled the tanks partially. Then emptied a small amount at a time so I had to keep opening and closing the valves. I could tell the difference immediately.

I'm adding it every other time I dump the black tank. Except for the grey, which I leave open most of the time and then fill and clean a couple of times a week.

[Tincup]

I have heard of two other methods to lubricate the valves.

1. Drill a small hole above the pull rod and spray in silicone lubricant, plug the hole with a small sheet metal screw. (Seems like this would work but after repeatedly removing and reinstalling the screw the hole might enlarge)

2. Pour a cup of vegetable oil in the head before and after dumping. Work the valve to spread the oil.

Haven't tried either method, just thought I'd share them.

Tincup