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post #1 of 10 Old 04-06-2009 Thread Starter
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Broken seacock

I just tried to close the seacock for my head discharge and the lever just popped forward.. now it moves loosely back and forth between open and closed, but is clearly not closing the seacock.

There is a slow drip coming into the boat.

Has this happened to anyone before?

I'm thinking I need to plug the seacock and pull the boat immediately.

W.D. Schock New York 36
Boston
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post #2 of 10 Old 04-06-2009
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Let me guess... it's a marelon (black plastic like material) seacock.

My guess is that you didn't follow the maintenance instructions on it, and that is why it seized up and snapped the handle. They need to be exercised regularly—like every time you're on the boat, and once a month MINIMUM. They also need to be greased annually at a minimum.

The reason it is probably dripping is you broke the handle stem off at the ball, and water is seeping by the damaged area.

You really should haul the boat and replace it. Putting a plug into it, unless it is from the outside, probably won't do anything, since the leak is likely inside the seacock ball valve itself.

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post #3 of 10 Old 04-06-2009
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Plug it from outside. Replace it when you get the bottom painted. No need wasting money and time.
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post #4 of 10 Old 04-06-2009
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Quote:
Originally Posted by tager View Post
Plug it from outside. Replace it when you get the bottom painted. No need wasting money and time.
That would scare the heck out of me - having a thru hull plug on the outside that I couldn't keep an eye on. And the insurance company might not like it either if it sank. My vote - pull the boat ASAP.

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Twenty years from now you will be more disappointed by the things y%^&*.....oh never mind. 90% of the people on sailing forums already use that as their signature! I'm not a conformist.
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post #5 of 10 Old 04-06-2009
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Might not be a marelon. The old style groco seacocks have a rubber plug with a bronze handle. The bronze handle to rubber plug will eventually disintigrate. That's why I'm on my third seacock replacement. The old style grocos are no longer made and they long ago ran out of most sizes of replacement parts.
Time for a new thru-hull, flange and ball valve
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post #6 of 10 Old 04-06-2009
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Won't know until the OP responds.
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Originally Posted by xort View Post
Might not be a marelon. The old style groco seacocks have a rubber plug with a bronze handle. The bronze handle to rubber plug will eventually disintigrate. That's why I'm on my third seacock replacement. The old style grocos are no longer made and they long ago ran out of most sizes of replacement parts.
Time for a new thru-hull, flange and ball valve

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post #7 of 10 Old 04-06-2009
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Thinking outside the box

What I'd do...

1) Plug the thru-hole/seacock from the outside
2) Haul the boat ASAP
3) REPLACE ALL THE SEACOCKS!

My reasoning is that one seacock breaking is a sign the others are likely to go soon as well.

Skipper, J/36 "Zero Tolerance"

PS I've heard most boats that sink do so in their own slip. The usual cause is a seacock leaking or hose breaking loose.
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post #8 of 10 Old 04-06-2009 Thread Starter
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Thanks for the advice all. I'm going to pull the boat this week and repair the seacock. No reason to mess around.

W.D. Schock New York 36
Boston
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post #9 of 10 Old 04-06-2009
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"it's a marelon (black plastic like material) seacock. "
No no no no no. What part of "no" is unclear?

Marelon is not a generic word for black plastic, Marelon is in fact a damn reliable nylon type material filled with glass fibers, essentially a block of cast fiberglass, which is arguably better than bronze because it never has galvanic issues.

Every time I've heard complaints about "marelon" they've turned out to be "Well, its black plastic, isn't that all the same?" and really, SD, it ain't.
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post #10 of 10 Old 04-06-2009
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HS—

I am very well aware that Marelon is glass-reinforced nylon, and not just plastic...but for all sakes of appearance, Marelon is a black-plastic-like material...which is what I said....

Most people don't give a rat's ass that it is technically glass-reinforced nylon composite...

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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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