Replacing Plastic Valves - SailNet Community
 
LinkBack Thread Tools
post #1 of 2 Old 10-23-2007 Thread Starter
Junior Member
 
Join Date: Aug 2006
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Replacing Plastic Valves

I have a 1982 Newport 28' when I removed one of the 1" valves I found that the thru hull is straight thread how can a bronze Groco valve be fitted as it has a tapered thread? Is there a better way to this job?
mandylynn is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 2 Old 10-24-2007
STARBOARD!!
 
KeelHaulin's Avatar
 
Join Date: Mar 2006
Posts: 1,662
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 11
   
Thru-hulls that are secured to the hull via a flanged nut and backing board (beneath the nut) can have a ball valve added to the threaded end of the thru-hull fitting. You will need to hold the thru-hull so it will not rotate from below, put plenty of PTFE thread compound on the threads of the thru-hull fitting and tighten it down as many turns as you can get before it binds. Use the biggest pipe wrench you can find/fit into the workspace. The thru-hull does not have tapered threads but the taper in the ball valve is enough to get a good seal.

All of the plastic ball valves that Capital Yachts used below the waterline should be replaced. Ideally all of them should be replaced with bronze or marelon; I prefer bronze. The thru-hulls themselves were heavy duty on my boat (a '79 N-41). The old fittings are twice the thickness of new ones and did not require replacement.
KeelHaulin 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
Replacing SeaCock Gate Valve with Marine Ball Valve saurav16 Gear & Maintenance 30 06-15-2007 10:52 PM
Plastic Lumber Cabin Sole jmcpeak Gear & Maintenance 20 03-18-2007 03:21 PM
Plastic paint for tired looking plastic parts Goodnewsboy Gear & Maintenance 3 01-01-2007 06:15 AM
Plastic Through-Hull Valves and Valve Flanges John Kretschmer Gear and Maintenance Articles 0 05-27-2001 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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

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