Raw water pump - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 57 Old 03-23-2007 Thread Starter
Hitchin' a ride
 
bestfriend's Avatar
 
Join Date: Sep 2006
Location: In my mind, I live in Oslo
Posts: 3,191
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 11
     
Raw water pump

Yet another question. I am replacing the raw water pump. On land I would use teflon thread tape on the 90 Degree elbow threads to make a good seal. Is it the same practice for raw water, or will it eat away the tape? I was also told that some use polyurethane caulk to make the seal, is that correct?

Great men always have too much sail up. - Christopher Buckley


Vaya con Dios
bestfriend is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 57 Old 03-23-2007
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
Teflon tape please... not polyurethane caulk... Teflon is far more chemical resistant IIRC...

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 57 Old 03-23-2007
Best Looking MALE Mod
 
Cruisingdad's Avatar
 
Join Date: Jul 2006
Location: Washington State
Posts: 9,917
Thanks: 3
Thanked 123 Times in 57 Posts
Rep Power: 10
     
Agree with SD, on this topic and this topic alone. This should not be considered a total agreement or confused with any agreement in the past, present, or future.

Sailnet Moderator



1987 Tayana Vancouver 42, Credendo Vides, (Mom and Pops boat, F/T Mobile Live Aboards in Puget Sound)

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


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


Follow me on Facebook:

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Cruisingdad is offline  
Quote Quick Reply Share with Facebook
post #4 of 57 Old 03-23-2007 Thread Starter
Hitchin' a ride
 
bestfriend's Avatar
 
Join Date: Sep 2006
Location: In my mind, I live in Oslo
Posts: 3,191
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 11
     
Oh, forgot to ask, how about on the zinc threads on the heat exchanger?

Great men always have too much sail up. - Christopher Buckley


Vaya con Dios
bestfriend is offline  
Quote Quick Reply Share with Facebook
post #5 of 57 Old 03-23-2007
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
Yes, unless you like tiny, hard to trace, leaks...

BTW, do not take any agreement between CD and me to be an indicator of future agreement...

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 #6 of 57 Old 03-23-2007 Thread Starter
Hitchin' a ride
 
bestfriend's Avatar
 
Join Date: Sep 2006
Location: In my mind, I live in Oslo
Posts: 3,191
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 11
     
Thanks guys, question answered, thread solved!

Great men always have too much sail up. - Christopher Buckley


Vaya con Dios
bestfriend is offline  
Quote Quick Reply Share with Facebook
post #7 of 57 Old 03-25-2007
Jolly Codger
 
svwhirlwind's Avatar
 
Join Date: Nov 2006
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
I would reconsider teflon/caulking the threads on the HE zinc, the more you insulate the zinc from the HE the less effective it becomes. It is conceivable that the effects of the zinc could be completely negated, therefore I would recomend no teflon tape/caulking . This is one time a minor leakmaybe acceptable.
svwhirlwind is offline  
Quote Quick Reply Share with Facebook
post #8 of 57 Old 03-25-2007
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
Svwhirlwind's got a very good point... nix the teflon tape on the zinc... he's completely right... it would act as a galvanic isolator...which is the last thing you want on a zinc. D'oh... my bad. While I don' t like tiny leaks, corroding heat exchangers are far worse...cause then you get a lot of them, plus a costly repair...

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 57 Old 03-25-2007
Just another Moderator
 
Faster's Avatar
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 16,534
Thanks: 104
Thanked 310 Times in 300 Posts
Rep Power: 10
     
Yes, you don't want to isolate the zincs....

Technically the teflon is really there to act as a lubricant/friction reducer and the tapered threads should seal themselves by design - but the tape will of course make up for some flaws or lack of tightening and is routinely used to reduce the possiblity of leaks.

An alternative to tape, especially if you are dealing with a system where you don't want an errant piece of the tape to enter the system is a teflon-based paste-type sealant.
Faster is offline  
Quote Quick Reply Share with Facebook
post #10 of 57 Old 03-25-2007 Thread Starter
Hitchin' a ride
 
bestfriend's Avatar
 
Join Date: Sep 2006
Location: In my mind, I live in Oslo
Posts: 3,191
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 11
     
I think the HE zinc should be ok by itself. It has a 1/4 inch of fine thread and feels very tight without the tape. Thanks guys.

Great men always have too much sail up. - Christopher Buckley


Vaya con Dios
bestfriend 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
Devising a Better Bilge Pump Don Casey Seamanship Articles 0 06-02-2002 08:00 PM
Devising a Better Bilge Pump Don Casey Gear and Maintenance Articles 0 06-02-2002 08:00 PM
Devising a Better Bilge Pump Don Casey Cruising Articles 0 06-02-2002 08:00 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