[Public-List] Recommendations for replacement seacocks and thruhulls

[Greg Hounsell]

If I may toss in my 2 cents. If thinking "plastic" the only safe option is
Marelon. Regular plastic is far too brittle in the long run. Be aware with
Marelon fittings, they are all straight thread so if you choose their
seacocks ( or ball valves), then stick with their fittings for that
assembly.

It costs more but I think going with proper seacocks is safer and stronger.
When you turn the stiff handle, the flange on the base of the seacock
against the hull takes the torsional stress. With a ball valve, that stress
is relayed straight down into the thruhull fitting, the nut and the
caulking. Sure they have lasted for years,  but why chance it? The original
Gate valves lasted for years but we all get rid of those asap...

Greg
592

On Mon, Jun 17, 2024, 7:30 a.m. Glenn via Public-List <
public-list at lists.alberg30.org> wrote:

> You will need two components: a thru hull, and a ball valve. The thru hull
> fitting clamps to the hull. The ball valve shuts off the flow of water into
> the boat, as needed. Any brand will do.  Bronze is the traditional
> material, although plastic parts are quite common now days as well. Stay
> away from stainless steel in this particular application.  Stainless is
> susceptible to galvanic corrosion if mated to a bronze fitting.
>
> THe most critical bit is to source the correct diameter for each rubber
> hose.
>
> Most any on line or walk up marine parts chandelry will have these readily
> available.
>
>
>
> Sent from my iPad
>
> > On Jun 16, 2024, at 7:00 PM, Wade Wall via Public-List <
> public-list at lists.alberg30.org> wrote:
> >
> > Hi all,
> >
> > I need to replace several of my thruhulls, but am very confused as to
> what
> > parts I need and what brand I should buy. I need to replace the cockpit
> > drains, the freshwater intake for the engine, and the galley thruhulls.
> Can
> > someone tell me, preferably with part numbers, what exactly I need? I
> know
> > this is a big ask, but even with my reading about it, I'm still confused
> > and I don't want to buy a bunch of parts that I don't actually need.
> >
> > Thanks for any help you can provide.
> >
> > Sincerely,
> >
> > Wade Wall
> > #421
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