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Old 12-01-2001
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THRUHULLS

I have Marelon (reinforced plastic) thruhulls and seacocks on my Laser 28 and they are now 15 years old and still work quite well. Obviously, there are various types and grades of plastic and so not all plastic secocks are made equal. Traditional bronze tapered plug type seacocks are more durable (if you can avoid electrolysis problems) and can be rebuilt almost indefinitely but do require more maintenance than ball valves. One word of caution there are bronze ball valves out there that are not really intended for use on seacocks.

Jeff
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