Fresh water tank vent location options - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 28 Old 10-17-2010 Thread Starter
Unpaid Intern
 
josrulz's Avatar
 
Join Date: Oct 2006
Location: Maryland
Posts: 990
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 9
 
Fresh water tank vent location options

Hi all,
I tried searching on this, and just couldn't find results amidst all the threads on holding tanks, vents, etc. If there's a link or something that I should read, please let me know.

On our 1984 Sabre 34, we have two fresh water tanks under each settee. Each has a vent line that runs forward, where they are T'd together under the V-berth, and then vented into the anchor locker.

I may need to move that anchor locker vent location due to some modifications in that area, and I'm wondering if I can choose a different location for the fresh water vent. Are there other options? Best practices for freshwater vent location and/or design? Other common locations on monohulls (if it differs on catamarans)?

I looked through most of the books I own, and the best I cold find was that there should be vents, and that's about it. Any thoughts on this?
Thanks,
J

1984 Sabre 34 Mk I

Last edited by josrulz; 10-17-2010 at 05:31 PM.
josrulz is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 28 Old 10-17-2010
Senior Member
 
remetau's Avatar
 
Join Date: Jan 2009
Location: Bradenton, FL
Posts: 780
Thanks: 0
Thanked 7 Times in 7 Posts
Rep Power: 7
 
Our tanks vent to our galley sink.

Don & Diana
sv Re Metau an HC33t

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
remetau is offline  
Quote Quick Reply Share with Facebook
post #3 of 28 Old 10-17-2010 Thread Starter
Unpaid Intern
 
josrulz's Avatar
 
Join Date: Oct 2006
Location: Maryland
Posts: 990
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 9
 
Quote:
Originally Posted by remetau View Post
Our tanks vent to our galley sink.
Thanks remetau, can you be a little more specific about the fixture? Sorry--I'm not familiar with that set-up, though I've heard reference to it.

1984 Sabre 34 Mk I
josrulz is offline  
Quote Quick Reply Share with Facebook
post #4 of 28 Old 10-17-2010
Senior Member
 
Sabreman's Avatar
 
Join Date: Sep 2006
Location: Yeocomico River, VA
Posts: 1,643
Thanks: 3
Thanked 18 Times in 15 Posts
Rep Power: 10
   
Could you put in a T fitting to the sink drain?

Boat looks good, Jim.

Sabre 38 "Victoria"
Sabreman is offline  
Quote Quick Reply Share with Facebook
post #5 of 28 Old 10-17-2010 Thread Starter
Unpaid Intern
 
josrulz's Avatar
 
Join Date: Oct 2006
Location: Maryland
Posts: 990
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 9
 
Thanks Sabreman.

Wouldn't T-ing it to the sink drain risk contamination of the tanks? Perhaps I'm not getting it.

1984 Sabre 34 Mk I
josrulz is offline  
Quote Quick Reply Share with Facebook
post #6 of 28 Old 10-17-2010
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,501
Thanks: 0
Thanked 96 Times in 87 Posts
Rep Power: 8
   
Don't put the vent into the sink drain. It will contaminate the tank.

Some boats vent to the sink like shown below (older Swan). The other option is high in the boat near the tanks, ideally on center. When filling water will come out the manual water outlets at the sinks first as they are lower than the vent. Inside vents avoid salt water contamination.
Attached Thumbnails
1.jpg  

Brian
Living aboard in Victoria Harbour

Last edited by mitiempo; 10-18-2010 at 12:12 AM. Reason: add
mitiempo is offline  
Quote Quick Reply Share with Facebook
post #7 of 28 Old 10-18-2010
Senior Member
 
remetau's Avatar
 
Join Date: Jan 2009
Location: Bradenton, FL
Posts: 780
Thanks: 0
Thanked 7 Times in 7 Posts
Rep Power: 7
 
Yes, my vent is much like the one in the picture above.

Don & Diana
sv Re Metau an HC33t

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
remetau is offline  
Quote Quick Reply Share with Facebook
post #8 of 28 Old 10-18-2010
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
         
Venting the tank inside the boat makes a lot more sense than venting it externally. Putting a freshwater tank vent on the hull is just asking for contamination, especially if you dip the rails when sailing. Venting them to a fixture mounted above the galley sink makes sense so that any water that does come out drains out the sink.

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 #9 of 28 Old 10-18-2010
Senior Member
 
Sabreman's Avatar
 
Join Date: Sep 2006
Location: Yeocomico River, VA
Posts: 1,643
Thanks: 3
Thanked 18 Times in 15 Posts
Rep Power: 10
   
All the descriptions make sense, but now I'm confused. Like josrulz, my vent is in the anchor well which definitely gets wet. While quite a bit higher than the tanks and faucets, I now wonder why I don't receive any contamination. Perhaps the vent is a one-way valve. That's the only explanation that makes sense to me.

Sabre 38 "Victoria"
Sabreman is offline  
Quote Quick Reply Share with Facebook
post #10 of 28 Old 10-18-2010
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,501
Thanks: 0
Thanked 96 Times in 87 Posts
Rep Power: 8
   
It is designed to vent air, not water. I doubt it is a one way valve.

Brian
Living aboard in Victoria Harbour
mitiempo 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
Water tank vent snorphinj Gear & Maintenance 30 04-04-2015 12:48 PM
Cracked Fresh Water Tank Fix??? Joesplace General Discussion (sailing related) 4 08-08-2009 05:57 PM
Water tank replacement options Valiente Gear & Maintenance 12 10-08-2007 10:11 PM
Smelly water from fresh water tank Bruce_Olson Gear & Maintenance 20 09-01-2007 04:42 PM
location of fuel tank vent sailhog Gear & Maintenance 6 07-29-2007 01:21 PM

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