Quote:
Originally Posted by campbdon
. Has anyone the worry that opening and closing the thruhull this regularly could lead to the risk of a thruhull (catastrophic) failure at some time? I was thinking to leave the valve mostly opened and open/close another (new) valve in the intake hose. Just wonderin??
DonC
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Electrolysis is a threat to underwater metals.
A proper "marine grade" installation should last indefinately with normal use.
Gate valves are a problem waiting to happen.
If you open and close the through hull valves occasionally it will keep them from "freezing" or corroding in the open or closed position.
ex TRUE GRIT