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Re: Replacing stand pipes with thru hulls / seacocks
Actually, I believe that our standpipes are metal pipes that are glassed into the hull. They are completely encased in fiberglass, so you don't see the metal.
To add a ball valve, you'd have to grind away the fiberglass at the top of the pipe to see if it's threaded to accept a ball valve.
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1973 Pearson 30 #255