Originally Posted by AFChap
One of mine came loose at the handle end. I repaired it with cable ties around each piece, and the two ties tied together with a could more ties. The I reinforced the other the same way just to play it safe. That was around 5 years ago and they still work fine today.
I bought the twist-on valve, but found there is not enough room for it in my wet bay. I keep a transparent elbow w/cap attached all the time to help guard against "surprises". The elbow angles downward, so it is the low point.
Maybe I should have said that after the internal actuating cable gets seized to the external sheath, and after the previous owner's big yank to break it loose successfully opened the dump valve, and after the p.o.'s attempts to close the dump valve by forcing the handle in stretched/broke loose the sheath to where you're basically trying to close the valve by pushing a rope uphill would have been more descriptive of the situation, but it's junk nonetheless.
I lucked out because this was our first shakedown run of our pre-owned unit, i.e. mostly just blue juice to clean up, and I have just enough room to fit the twist-on valve in place of the cap (with 2" Gorilla tape to make sure it doesn't twist itself off).
That's my experience to pass along, is if anybody is having problems with stiff acting cable actuated dump valves, they won't get better with time. Better to fix them now than find out at a busy dump station after a long weekend that it didn't close all the way last time.