Marelon Seacocks and Below the Waterline Through Hulls

Corrosion, Paint, Through Hulls, etc.
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carl
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Posts: 355
Joined: Sun Feb 08, 2015 5:58 pm

Marelon Seacocks and Below the Waterline Through Hulls

Post by carl »

BigM
Last edited by carl on Wed Jul 10, 2019 10:50 am, edited 1 time in total.
ForEvers
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Joined: Sun Jul 13, 2014 1:53 pm

Re: Marelon Seacocks and Below the Waterline Through Hulls

Post by ForEvers »

I rebuilt my first Marinette (a 26') in 1999 and installed all Marelon, including a 1 1/2" seacock for the engine pickup (raw water cooled). That seacock was removed last year and it is like new. As you noted, no electrical issues at all. The larger seacock is very robust and never left me in doubt, but I am on fresh water, Lake Michigan.
My current rebuild is an M32. I am using all Marelon for thru-hulls, as well as (2) 1 1/2" seacocks for engine pickups, (1) 3/4" seacock for a/c intake, and (2) 1 1/2" valves for each of the sink drains.
In short, I believe in them.
I don't remember where I read it, it might be in their instructions....but as part of winter lay-up each year I pull the hose and pour 4-5 drops of cooking oil on the ball, open/close the handle a couple times...it's good for another year.
Hope that helps.
Forevers is a 32' Custom Express from 1972
with twin 318's.
Docked on southern Lake Michigan
carl
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Posts: 355
Joined: Sun Feb 08, 2015 5:58 pm

Re: Marelon Seacocks and Below the Waterline Through Hulls

Post by carl »

BigM
Last edited by carl on Wed Jul 10, 2019 10:50 am, edited 1 time in total.
ForEvers
New poster
Posts: 5
Joined: Sun Jul 13, 2014 1:53 pm

Re: Marelon Seacocks and Below the Waterline Through Hulls

Post by ForEvers »

I used all Marelon... thru-hulls, sea scoop, and seacock. Worked like a charm...
A note of caution re: bronze on an aluminum hull. Previous owner of my current M used (1) bronze thru hull for the a/c unit. As a result, pitting of the hull radiates from that thru hull, along the keel line. Stray current caused the pitting, which would not have happened had the thru-hull been Marelon.
Hope that helps.
Forevers is a 32' Custom Express from 1972
with twin 318's.
Docked on southern Lake Michigan
TinLizzy
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Posts: 264
Joined: Mon Jan 19, 2015 11:07 pm
Location: Lake Superior-Michigan's U.P.

Re: Marelon Seacocks and Below the Waterline Through Hulls

Post by TinLizzy »

My only question about Marelon, Is it impact resistant? Can it handle a direct hit from say a log while on plane? That is the only thing that I have worried about.
Rodney
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
barkleydave
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Posts: 410
Joined: Sat Jul 12, 2014 6:18 am
Location: Kentucky

Re: Marelon Seacocks and Below the Waterline Through Hulls

Post by barkleydave »

Marelon has been around a long time and is proven product in the marine industry.


safe boating,
dave
1987 Marinette 29 FB Sedan
Retired Boat Accident UL and USCG trained investigator
Retired USCG Captain
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