I had a mobile service guy come out to quote me on replacing my black tank valve. The valve has been very difficult to operate (especially close) and is leaking a small amount.
After cutting an access door in the underbody to look at things, he concluded that the valve is glued to the black tank. He pointed out some hard white material at the connection and said it was glue. Oddly, there was a hose clamp there as well. That made no sense to me that they would glue it AND clamp it. And it's so close to the tank that cutting it off is not an option as it wouldn't leave enough for a new valve to be installed. So, he recommends leaving it open and installing another valve downstream where he has access.
These valves are prone to failure and need replacing from time to time. Is it normal for them to be glued like this or is it possible this white stuff is something other than glue? I'm beginning to wonder if this service guy knows what he's looking at.
2020 Chevy Silverado 3500HD Duramax 4x4 Crew Cab Standard box
2011 Arctic Fox 27.5L