Blowing out fresh water tanks: revisited - SailNet Community
LinkBack Thread Tools
post #1 of 2 Old 10-14-2013 Thread Starter
Senior Member
Join Date: Dec 2012
Location: Columbus, Ohio
Posts: 144
Thanks: 53
Thanked 4 Times in 4 Posts
Rep Power: 5
Blowing out fresh water tanks: revisited

Hello all, I went to be boat yesterday to try to blow out the water lines with compressed air, as I had posted last week

How to blow out fresh water tanks

I had found a tire inflator at Meijer that allowed you set it to automatically shut off if it reached a certain PSI, and set it to shut off at 18.5 PSI as recommended by Eherlily. Anyway, it worked out pretty well, but there at the end it seemed like I could never get the last little bit of water out of the hoses.

The compressor would be switched on, I would monitor how much pressure was building up, and when it got to 12-15 psi I would open the faucet, and about another tablespoon or so of water would spurt out, then I'd get air, and a very quiet gurgling. So I'd close the faucet, let the pressure build up, open the faucet and get another tablespoon or so of water, and so on and so on. Is this normal?

Also, I had to sponge out the forward water tank, because there was about another half gallon of water in there. I noticed that the access cap for the water tank has some sort of fluid in it. I looked at it closely to see if there was a plug in it to allow me to drain what I assume is water, but it appears to be perfectly sealed. No cracks or anything that would allow water to penetrate, so I thought well maybe it has fluid in it on purpose, but I can't think of why that would be. Any ideas?

Thanks all!
bshock is online now  
Quote Quick Reply Share with Facebook
Sponsored Links
post #2 of 2 Old 10-14-2013
Irrationally Exuberant
Join Date: Jul 2007
Location: Northern Virginia
Posts: 1,388
Thanks: 11
Thanked 9 Times in 9 Posts
Rep Power: 10
Re: Blowing out fresh water tanks: revisited

Freeze damage happens when the water is contained to where it has no room to expand when it freezes. Some water in the bottom of a tank is not really contained and won't be a problem if it freezes. I believe the same would be true with the last bits left in a pipe. To get as much as possible out of a pipe, though, you might undo a fitting at a low point and let it drain.

Tom K

2000 Beneteau 331
Northern Chesapeake Bay

Ambition is a poor excuse for not having enough sense to be lazy ~ Steven Wright
arf145 is online now  
Quote Quick Reply Share with Facebook

Quick Reply

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


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

Email Address:


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
How to blow out fresh water tanks bshock Gear & Maintenance 12 10-16-2013 10:32 AM
Winterizing Fresh Water Tanks CliffL Cruising & Liveaboard Forum 17 11-12-2010 07:25 AM
Bleaching Fresh Water Tanks / Bad Move ? dougshipl Gear & Maintenance 17 02-28-2008 01:22 PM
Cleaning Fresh Water Tanks RickBowman Pacific Seacraft 1 11-01-2007 10:54 PM
Flushing fresh water tanks freddy4888 Gear & Maintenance 2 10-03-2007 08:32 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