Join Date: Jan 2012
Location: British Columbia
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Re: Of thru-hulls and seacocks...
There are no rules, only guidelines, some of which are often way off the mark , far removed from reality. Most white plastic thru hulls are extremely brittle plastic, which can easily be kicked off with the heel of the foot, leaving a 2 inch hole in your boat. A bit of heavy gear shifting can do the same. A fire on board will melt plastic thru hulls quickly. Bronze is a far better choice.
Black Marlon is a far better version of a plastic thru hull, as it is soft, like polyethylene, and cant crack. Being black makes it far more immune to UV degradation.
On my steel hulls, I use stainless type 316 , sch 40 pipe nipples, welded in, with a type 316 ball valve, screwed on with teflon tape. There is no tougher, more reliable thru hull available anywhere. In over 40 years of use, they have given me and my clients zero problems.
Last edited by Brent Swain; 08-06-2012 at 04:53 PM.