Mushroom through hull portion of the 1/2" and 3/4" seacock through hull valves used on most Catalinas 25' and larger starting in 1993. This part is only for the white through hull portion of the seacock. Order this part in if the seacock you are replacing has mushroom head as opposed to a flush head.
Molded Marelon offers superior strength and corrosion resistance. Marelon is lightweight, corrosion and electrolysis free, ideal for thru-hull valves. Marelon is a modern material formulation of polymer composite compounds that uses resins and additives to produce an extremely strong marine-grade product that will not deteriorate like traditional bronze marine plumbing parts. Ideal for above and below the waterline applications.
• Thread type: Non-tapered buttress type
• Outside thread diameter: 1.10"
• Inside diameter: 0.62"
• Mushroom head diameter: 1.73" (needs to be confirmed)
WARNING: Since these thru-hull fittings have a non-tapered buttress type thread, use only with our matching seacocks pictured below.