I'm hauled out of the water
right now. The guy who pulled all the stainless steel
thruhull valves (I have thirteen valves threaded on to an aluminum
hull) said he does not recommend Marelon at all. I asked him because I was considering replacing some stainless with Marelon instead of buying
another expensive stainless steel
valve. He has worked on thousands of boats for many years. He said he cant tell me how many times boats have had to be hauled out because a Marelon valve was so tight that the owner or whoever, busted the valve handle off trying to close or open the valve.
He convinced me right then and there not to use Marelon. If I ever start taking on water
I want to know with certainty the same thing is not going to happen to me.