Seacock question - SailNet Community
 
LinkBack Thread Tools
post #1 of 4 Old 07-20-2007 Thread Starter
Member
 
Join Date: Oct 2006
Posts: 83
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Seacock question

We are troubleshooting our new old boat. It is an Endeavour 33. You loosen a bolt before opening or closing a seacock, and then you tighten the bolt.

We have ahead discharge valve which is open and does not leak. When we loosen the bolt, close the seacock, and then tighten the bolt again, it continues to weep.

Gosh, why would be a seacock leak when closed, but not when open?

Also this seacock is labeled head discharge. I am thinking this should be closed as we would use the holding tank.... I can't imagine that this should remain open......

Feeling pretty clueless about this. Any advice always appreciated.

Thanks, SaltyPat
saltypat is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 4 Old 07-20-2007
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 15 Times in 12 Posts
Rep Power: 14
         
Is it a tapered valve seacock or a ball valve seacock? From the sounds, it is probably a tapered valve seacock.

If it has any mineral deposits or corrosion on the tapered cone or the valve seat, it may leak in one position but not the other. If it is a ball valve, the same thing could happen, but I would think it'd be less likely. The other thing that could the problem is the mating surface for the tapered cone or ball valve has gotten scratched or scored, and when it is open the fluid goes through to opening, but when it is closed, it leaks through the damaged area. I would recommend that the next haul out, you take the seacock apart and inspect the surfaces of the internal parts for either damage, corrosion or mineral deposits.

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

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)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline  
Quote Quick Reply Share with Facebook
post #3 of 4 Old 07-20-2007 Thread Starter
Member
 
Join Date: Oct 2006
Posts: 83
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Saliingdog-
you are a top dog- thanks for the advice on the seacock and the stove.

SaltyPat
saltypat is offline  
Quote Quick Reply Share with Facebook
post #4 of 4 Old 07-21-2007
all these confusing ropes
 
Join Date: Aug 2006
Posts: 166
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
I remember reading that this kind of seacock uses a rubber plug and with time the rubber plugs can get distorted and leak in one position
dohenyboy is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Lubricant for seacock FrankTugw2ell Gear & Maintenance 19 07-07-2011 09:05 PM
Ladder question mcain Gear & Maintenance 14 08-03-2007 10:28 PM
a question of experience - and Boat size youngfamily General Discussion (sailing related) 6 07-05-2007 09:16 AM
Rusty seacock patrickbwells Gear & Maintenance 11 03-21-2007 03:48 AM
GPS question wallm General Discussion (sailing related) 13 05-30-2004 02:10 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome