Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


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

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 05-27-2013, 01:49 AM   #1
Member
 
Join Date: Jun 2009
Location: Oregon
Posts: 46
Share |
Default

Copper pipe size change


I have a bathroom being supplied by 1/2 inch copper on a trunk that branches to 1/2 copper to the fixtures. The cold line continues and then transitions to a 3/4 inch line that supplies an outdoor spigot. Is this ok? I've always thought lines were supposed to get smaller, not larger. Also , should I change the trunk line to 3/4 inch?

Outdoorbum is offline   Reply With Quote
Old 05-27-2013, 02:22 AM   #2
Member
 
Join Date: Dec 2009
Posts: 595
Default

Copper pipe size change


Are you having a problem with this line?

hvac benny is offline   Reply With Quote
Old 05-27-2013, 06:16 AM   #3
Member
 
Join Date: Oct 2011
Location: pa
Posts: 4,014
Default

Copper pipe size change


need to see a picture of set up ...which direction is the flow comming from and volume it needed to supply demand of house...ben sr
ben's plumbing is online now   Reply With Quote
Old 05-27-2013, 07:47 AM   #4
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 24,576
Default

Copper pipe size change


And your right, from the main supply the line should have been 3/4 all the way to the end with 1/2 lines coming off of that to your supplys.
Adding 3/4 to the end would useless.
__________________
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
joecaption is offline   Reply With Quote
Old 05-27-2013, 07:49 AM   #5
Member
 
Join Date: Apr 2011
Location: North Carolina, USA
Posts: 2,232
Default

Copper pipe size change


There shouldn't be a problem with that. Usually there's no problem going smaller to bigger. There can be problems going bigger to smaller, especially on your drain pipes. You also wouldn't want to do something like patch a 3/4" supply pipe with 1/2". Then you'd be going from bigger to smaller where it forms a bottleneck. Going from 3/4" to 1/2" from your main supply line to a fixture doesn't cause a bottleneck for the rest of the system. Neither does going from 1/2" to 3/4" to a fixture.
jeffnc is offline   Reply With Quote
Old 05-27-2013, 10:07 AM   #6
Member
 
Join Date: Jun 2009
Location: Oregon
Posts: 46
Default

Copper pipe size change


No, not having problems with anything. Just currently starting a bathroom remodel and I'm under the house examining how things were done . I'm a total amateur but studied it and wondered why, unless the outdoor spigot only accepts a 3/4 inch line and they decided to transition where I'm looking . There are tees that go to a now defunct solar water heater , so figured this would be a good place to install some shutoff valves, as the tub currently has none and an access panel would be tough.
This would shutoff water to the whole bathroom, but its a convenient location
Outdoorbum is offline   Reply With Quote
Old 05-27-2013, 10:39 AM   #7
call me E
 
TheEplumber's Avatar
 
Join Date: Jul 2010
Location: Idaho
Posts: 6,188
Default

Copper pipe size change


If you are going to be remodeling the bath- I'd run the branch piping 3/4" with 1/2" to the fixtures. You can reduce the branch line to 1/2" for the last 2 fixtures as a general rule.
Some hose bibs are designed to except 3/4 or 1/2" pipe- sounds like the installer chose the 3/4 route.
Pipe size increasing is not an issue at the bib
__________________
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
TheEplumber is online now   Reply With Quote
The Following User Says Thank You to TheEplumber For This Useful Post:
Alan (05-27-2013)
Old 05-27-2013, 12:11 PM   #8
MarginallyQualified
 
Join Date: Dec 2011
Location: Winston-Salem NC
Posts: 3,469
Default

Copper pipe size change


Quote:
Originally Posted by Outdoorbum View Post
I have a bathroom being supplied by 1/2 inch copper...
The cold line continues and then transitions to a 3/4 inch line that supplies an outdoor spigot. Is this ok?
The day the house was being plumbed:
Helper: Hey Bob, these hose spigots are all 3/4". What should I do?
Plumber: Oi. Go out to the truck and get some 1/2 x 3/4 adapters. Use 'em.
Helper: It won't matter?
Plumber: Nope.

TarheelTerp is offline   Reply With Quote
The Following User Says Thank You to TarheelTerp For This Useful Post:
ddawg16 (05-27-2013)
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Do I need a ground rod to replace copper water pipe mfkcbk Electrical 10 11-11-2010 04:03 PM
Is yellow polyethelene or polyphenol gas pipe now the preferred gas conduit? MarkSilber Plumbing 1 09-18-2010 12:10 PM
copper pipe vs pex I'm in trouble Plumbing 4 06-27-2010 11:42 PM
correct size pipe for water lines jce Plumbing 2 04-11-2010 08:23 PM
Copper pipe size question greymous Plumbing 18 01-30-2009 04:02 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.