Any Problem With Cold Water Branch Before Water Heater? - Plumbing - DIY Home Improvement | DIYChatroom

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


Thread Tools Display Modes
Old 06-08-2011, 02:45 AM   #1
Join Date: Jun 2011
Posts: 1
Rewards Points: 10

any problem with cold water branch before water heater?

we want to turn the tub in opposite direction and replumb. fyi: changing all galvanized piping to copper for enitre house. will be using 3/4" soldered copper until vertical lines for fixtures, which will then be 1/2" soldered copper.

all fixtures basement and first floor only.

waste drain for tub in new position will be in way of "lengthening" old cold water supply following current plumbing route. won't be a problem for hot supply route.

any reason that we should not branch off (with 3/4" t) main (cold) supply line to tub before supply line reaches water heater? old house, so approx 30-35 ft to water heater as it still vents into chimney.

currently, hose bibb t's off supply line before water heater, which will not change. that branches off after proposed tub branch, but of course, before water heater.

cold supply after water heater would be to laundry tub and washer (basement); kitchen sink; toilet and bathroom sink (all main floor). tub just happens to be much closer to front of house like water supply line coming in, just on opposite wall.

Any input greatly appreciated!



jasperjodo is offline   Reply With Quote
Old 06-08-2011, 06:12 AM   #2
Join Date: Dec 2008
Location: Wilmington, DE
Posts: 3,118
Rewards Points: 2,000

Not sure I understand your question. Branches are allowed anywhere in the line(hot or cold), it matters not where the heater is located. Hot and cold are seperate lines. Before the heater it is cold, after the heater ir is hot. And you are correct that all lines should be 3/4 as close to a fixture as possible.

Switching ends on the tub can be an issue for venting and drainage, but supply is not a problem.


Just Bill is offline   Reply With Quote
Old 06-08-2011, 06:43 AM   #3
Long-Time DIYer
Mike Swearingen's Avatar
Join Date: Mar 2005
Location: On Albemarle Sound In Northeastern NC
Posts: 1,460
Rewards Points: 500

And your water pressure should substantially improve when you replace that old galvanized with the copper.
Mike Swearingen is offline   Reply With Quote
Old 06-08-2011, 08:01 AM   #4
TheEplumber's Avatar
Join Date: Jul 2010
Location: North Idaho
Posts: 9,975
Rewards Points: 904

If water pressure is around 60-80psi it is not uncommon to supply 2 fixtures on a 1/2" line. Unless you will be installing a T/S valve with multiple heads and body sprays, 1/2" will do just fine.
TheEplumber is offline   Reply With Quote

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
Smelly brown water from water heater timthetoolman Plumbing 2 05-19-2011 09:32 AM
Pluming Hot Water Turning Cold - Help! kissiffer4 Off Topic 1 01-14-2010 05:00 PM
strange problem with hot and cold water globusa Plumbing 2 09-25-2009 09:46 AM
Kitchen Faucet Cold Water Runs Hot Mthrboard Plumbing 8 08-02-2009 06:59 AM
Water heater pressure relief valve confusion Flt_Simulation Plumbing 4 07-11-2009 10:02 AM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1