[C320-list] Marelon seacock problem

[Michael Rauh]

As our boats age and many have second or third owners, it is very possible that the parts are not original factory items.

Mike
#408 On Your Mark
City Island, NY

Sent from my iPhone

> On May 15, 2017, at 20:41, Scott Thompson <surprise at thompson87.com> wrote:
> 
> Actually the one I have looks more like this...
> 
> https://www.fisheriessupply.com/forespar-marelon-full-flow-seacock-flush-thru-hull-x-ball-valve-x-hose-barb-oem-932143
> 
> In particular, mine has a straight-through hose barb and a flush (not mushroom) thruhull. (The latter probably doesn't matter for this project.) The main uncertainty I have is about the size. I called Catalina today and they said it could be one of several different sizes. Catalina Direct also had no idea as to the correct size. The boat is on a mooring and I can't get out to her for a few days so will hope for the best. In the meantime I'm guessing that 3/4" is the right size based on email from David Prudden this morning.
> 
> The boat was just launched 10 days ago so the bottom should be in pretty good shape. I don't need a perfect seal -- just enough to let me do the installation.
> 
> Seabung comes in a package of two different sizes and they say that the smaller one is good for a 3/4" thruhull. We will see! It's expensive but cheaper than a diver and the water is still pretty cold so I'm not keen about going overboard myself.
> 
> 
>> On 5/15/2017 6:50 PM, Jeff Hare wrote:
>> Yuck.  You need the 16 added to the end of that link below.  It got line
>> wrapped!
>> 
>> Or you can just go here...   http://tinyurl.com/thruhull
>> 
>> 
>> -----Original Message-----
>> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf
>> Of Jeff Hare
>> Sent: Monday, May 15, 2017 6:48 PM
>> To: C320-List at Catalina320.com
>> Subject: Re: [C320-list] Marelon seacock problem
>> 
>> I assume that the bottom of your boat is nice and clean around the
>> thru-hull, right?  Otherwise, seabung won't seal very well in my opinion.  I
>> think it'll also make it a more difficult to disassemble and replace the
>> valve with that bung having the big loop on the end (unless that loop will
>> easily fit through the ball valve hole).
>> 
>> If you have this valve:
>> http://www.defender.com/product.jsp?path=-1%7C51%7C2234277%7C2234282&id=1993
>> 16
>> 
>> Then once you plug the bottom using the built in plug, you'll unscrew the
>> four screws in the top of the valve, then the top two sections of the valve
>> will come apart.  The top section is the tailpiece where the hose connects,
>> the middle section is the one containing the handle and the ball valve.
>> 
>> You'll pop a new middle section and top section in place with the new
>> gaskets you got from the new one and install the 4 screws.  Then go on deck
>> and pull the string tied to the plug to remove it and you're done.
>> 
>> -Jeff
>> 
>> -----Original Message-----
>> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf
>> Of Scott Thompson
>> Sent: Monday, May 15, 2017 1:08 PM
>> To: C320-List at Catalina320.com
>> Subject: Re: [C320-list] Marelon seacock problem
>> 
>> I can find this part and the Seabung at Fisheries Supply in Seattle with
>> two-day shipping and decent prices. I can't find either one at Catalina
>> Direct.
>> 
>> But can anyone confirm that the appropriate size is 3/4"? They seem to have
>> a range of sizes. This is for the sink drain in the head.
>> 
>> 
>>> On 5/15/2017 6:14 AM, David Prudden wrote:
>>> Scott,
>>> I had the same problem a year ago.
>>> 
>>> The thru-hull part is a forespar #932143
>>> 
>>> Contact Randy there about it
>>> randall at forespar.com
>>> 
>>> David Prudden
>>> #787
>>> 
>>> Sent from my iPhone
>>> 
>>>> On May 14, 2017, at 8:40 PM, Jeff Hare <Catalina at thehares.com> wrote:
>>>> 
>>>> Scott,
>>>> 
>>>> That's a problem.  If I were you, I'd consider wrapping rescue tape
>> around
>>>> that handle and make arrangements to get the plug inserted into the
>>>> thru-hull from outside so that you can replace the ball valve layer
>>>> of
>> the
>>>> thru-hull.  Be sure to attach a string to the loop on the plug so you
>>>> can remove it from deck without a second dive.
>>>> 
>>>> The reason is that if that handle screw is stripped such that it
>>>> doesn't hold the handle in place, the water pressure will pop the
>>>> handle off, tossing the o-ring and washers somewhere turning that
>>>> drip into a substantial leak.  I think it will be enough of a gusher
>>>> that you won't
>> be
>>>> able to get the screw, o-ring and washers back in place (assuming you
>> could
>>>> even find them again) without the plug installed in the outside.
>>>> 
>>>> Don't let that go...
>>>> 
>>>> -Jeff Hare
>>>> #809
>>>> 
>>>> 
>>>> -----Original Message-----
>>>> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On
>> Behalf
>>>> Of Scott Thompson
>>>> Sent: Saturday, May 13, 2017 4:41 PM
>>>> To: C320-List at Catalina320.com
>>>> Subject: [C320-list] Marelon seacock problem
>>>> 
>>>> I noticed a small leak that seems to be coming from the handle of a
>> seacock
>>>> when it is open. When I try to tighten the screw through the handle
>>>> it
>> just
>>>> spins. Advice welcome!
>>>> 
>>>> Scott Thompson
>>>> Surprise #653(1999)
>>>> 
>>>> 
>