seacock difficulties - SailNet Community
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post #1 of 11 Old 04-07-2002 Thread Starter
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seacock difficulties

I''ve just reinstalled a Blake''s seacock, having ground it in to a reasonable finish and applied plenty of silicone grease.

Try as I may I cannot seem to adjust the retaining plate properly. If the handle turns easily, under gentle pressure, the retaining plate seems a bit loose. If I carefully tighten the plate then as soon as it "sets" the handle becomes disproportionately harder to turn.

It beats me. Any ideas?

Thanks.

Tappers
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post #2 of 11 Old 04-30-2002
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seacock difficulties

If I remember correctly, the Blake seacock has a tapered barrel. If so, maybe you need to take it apart and lap the surfaces together using some grinding compound specific for that application (e.g., Spartan) or some fine automotive valve grinding compound from NAPA, etc.

When they are right, they work like a charm.


Keep on sailing,

Ken Coit
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Hailing Port: Raleigh, NC
Sailing from: Beaufort, NC

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post #3 of 11 Old 05-01-2002
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seacock difficulties

I just fitted 5 new Blakes seacocks to my Nicholson 35 after replacing the old ones which were starting to fall apart after 17 years hard service.

The key question is whether you are seeing any seepage past the conical plug? With mine, the retaining plate is loose enough to wobble with light finger pressure. No water comes in so I am happy...

If you overtighten the plate you will cause undue wear on the cone and eventually the valve will seize up.

Graham
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post #4 of 11 Old 05-09-2002
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seacock difficulties

enough of this fixing and re-fixing it just replace it. it takes me 1-2 hrs to replace a seacock. that includes taking the hoses off seacock off and thru hull out. also
putting in the new one.
enough of this trying to save money on safty equipment.

-scott-
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post #5 of 11 Old 11-08-2006
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from where can one buy Blake seacocks?

hi:
I live in USA, near DC/Annapolis.
From where can one buy Blake seacocks? Does one have to order them from England? Is there a website for these (and other parts reasonably priced)?
Thanks. PD
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post #6 of 11 Old 11-08-2006
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You just questioned a 4 year old post ...but these guys should be able to help!
Spartan Marine Hardware • 340 Robinhood Road • Georgetown, Maine 04548 - - HOME - Email
207/371-2542 • 800/325-3287 • Fax: 207/371-2024 - SpartanMarine.com -
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post #7 of 11 Old 11-08-2006
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I prefer the lower maintenance of the ball-valve seacocks.

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post #8 of 11 Old 11-09-2006
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I have been reading about sailboat maintenance lately and am getting conflicting information about ball-valve bronze (not marelon) seacocks. Some books indicate that they don't need any maintenance unless they are becoming noticeably stiff, in which case they should be taken apart, cleaned, greased and reinstalled. Other books indicate they should be taken apart annually to do the above. Do any of you know what is correct; and what most people do?
Thanks,
Frank.
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post #9 of 11 Old 11-09-2006
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Generally, all ball-valve seacocks should be operated at least once a month and greased twice a year IMHO.

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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.

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post #10 of 11 Old 11-10-2006
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How are you greasing those ball valves if the boat is in the water?
Thx
Ike
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