Black Tank Valve Replacement
It seems every 2 years I need to replace the valve on the black tank because it become very difficult to pull. What am I doing wrong that causes this to happen?
Forum Discussion
I had a similar problem repeatedly until I found out that as I would change the seals or sometimes the entire valves, I would lube the seals and surfaces with vaseline or plumbers grease. This was recommended by the manufacturers and people on various sites. This was the problem: petroleum products will degrade rubber type products making them soft and spongy. In my case, the seals were swelling and would cause it to drag as the valves were being used. Now I only use silicone products like plumbers grease that is SILICONE based and not petroleum based. Have not had trouble for years since.
