Can't Remove Old Valve - Plumbing - DIY Home Improvement | DIYChatroom


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 02-21-2011, 10:41 AM   #1
Newbie
 
Join Date: Feb 2011
Posts: 2
Rewards Points: 10
Default

can't remove old valve


I am replacing a bathroom faucet. I have removed the old faucet as well as all the old, corroded drain pipes. I would like to replace the old valves, but can't get them to budge when trying to unscrew. I couldn't shut off the valves by hand to close the water supply. I think it's due to the hard water here in Tucson.

What should I do to get these valves off.

Advertisement

jporty is offline   Reply With Quote
Old 02-21-2011, 12:46 PM   #2
Civil Engineer
 
Join Date: Mar 2009
Location: Boston
Posts: 4,306
Rewards Points: 2,190
Default

can't remove old valve


I assume these are threaded valves. If they are sweat fit, you need to use a torch to heat up the solder to get them off. You need to shut the water off before attempting to remove the valves, by your description they are on very tight, and you are going to need a pipe wrench or similar large leverage tool to remove them. In the process of removal, there is a reasonable chance you will either twist off the pipe they valves are attached to, or possibly damage the pipe beyond repair. I personally have had some epic problems with valve removal.

Based on my experience, you need to be prepared to replace the pipe stub when you try to remove a stuck valve. If the pipe stub is in reasonable condition, you can use two pipe wrenches, one to hold the pipe in place, one to turn the valve. Sometimes it helps to spray some WD-40 onto the old pipe/valve junction first. Assuming you can get the valve off, you may need to chase the threads before installing a new valve. I like to use a combination of teflon tape and pipe dope when installing a new valve, the pipe dope seems to reduce long term corrosion, and makes it easier to remove the valve in the future. Not to mention reduces leak potentia.

Advertisement

Daniel Holzman is offline   Reply With Quote
Old 02-21-2011, 03:43 PM   #3
Newbie
 
Join Date: Feb 2011
Posts: 2
Rewards Points: 10
Default

can't remove old valve


Thanks Daniel! I finally got the valves off with a little extra help from a blow torch. Now, I think I need to remove the corroded galvanized nipples as well and replace them with brass nipples to help alleviate this sort of problem in the future. I can see that I have a brass fitting behind the galvanized nipple. Any suggestions on getting the galvanized nipples out?
jporty is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Replacing flush valve on one-peice Kohler Toilet griffin2000 Plumbing 5 11-27-2012 03:04 PM
Gas valve on a bryant heavyduty HVAC 1 12-16-2009 09:42 AM
Leaky air valve on furnace dcam HVAC 0 11-01-2009 07:36 PM
Check valve and foot valve on same well feed? rtoni Plumbing 4 06-04-2009 10:42 AM
Double Check Valve installation (and a few other questions) secutanudu Plumbing 0 04-17-2009 08:42 AM




Top of Page | View New Posts