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
RLS7201 wrote:ernie1 wrote:
Can't say exactly what material the dump valve seals are but absolutely do not use any petroleum based lubricant on them. They WILL swell and cause all sorts of problems. Use a silicone based lubricant and not a petroleum based one!
I installed grease zerks in my dump valves over 10 years ago, and my seals haven't swelled yet. Again, petroleum will not hurt the dump valve seals. They are not rubber. Most likely, they are buna-N.
Richard
Bob is the oil guy did a test using Buna n seals and various petroleum products. All were the same size before test.
This was the result of his test.
