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Old 01-06-2013, 12:02 AM   #16
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What is the best way to run hot and cold water supplies for this...?


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Originally Posted by Alan View Post
The orientation of your Lav tee should be a 3/4 x 1/2 x 3/4 (remember continue 3/4" cold to the toilet)

Cold tee at toilet should be 3/4 x 1/2 x 1/2

Cold tee at washer should be 3/4 x 1/2 x 1/2

Agree with above that some of your labeling is confusing me....


Hot tee at washer is 3/4 x 1/2 x 1/2. Run a 1/2" line to kitchen and delete the dishwasher from the picture all together.

Hot tee at Lav is 3/4 x 1/2 x 1/2


Hope this helps.
Great advise, Alan.

I have revised the sketch to resemble more accurately the different sizes in pipe lines and tees; and remove the possibilty of any confusion in translation.

Also, as for the dishwasher, I ultimately would like to have to have that come off of the kitchen sink faucet (hot) line - so what's in this sketch version is not the "final".

Please take a look.
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Last edited by oodssoo; 01-06-2013 at 12:08 AM.
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Old 01-06-2013, 09:35 AM   #17
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What is the best way to run hot and cold water supplies for this...?


I'd take a step back and make sure you know what basic kind of configuration you want and why. Do you know?

http://www.finehomebuilding.com/item/4829/three-designs-for-pex-plumbing-systems#

Depending, you can cut out all those reducing tees by using manifolds.
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Old 01-06-2013, 12:42 PM   #18
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What is the best way to run hot and cold water supplies for this...?


Any chance of giving us a floor plan to show 'actua' locations of the fixtures?

Ood....if it makes you feel any better....I fell your pain.....going through it now with my 2-story addition....

A couple of notes....

On the bathtub.....see if you can run the cold to the tub 1st and then to the toilet....that way when someone flushes the toilet, because the water is passing the shower first, the pressure drop at the shower will be a lot less. The anti-scauld valve is supposed to take care of that....but...you never know.

Your cold water dwg is not quite right.....it doesn't show where the cold comes in from the street. Where is the cold supply relative to the water heater? I would be inclined to think that your best overall performance would be for the cold supply to go to the water heater with a Tee to it and then off to your field devices.

Lastly......you would be amazed at just how much water a 3/4" pipe holds. For my addition, I moved my water heater from the front of the house to the back. This new location put it about 15' closer to the majority of the fixtures. Except the kitchen is now about 35' further from the hot water heater than before. Not a biggie....washer and dryer moved to the back. But now, when you turn on the hot at the kitchen sink....it takes awhile to get hot water (yes, a small tankless is in the future plans).

Originally I had a 3/4 copper pipe from the rear to the front. I recently changed it to 1/2". Pulling numbers from memory, I believe I was originally using about .8 gallons of water before I purged the cold water out of that line and got hot water. Going down to 1/2" droped the volume over half....to about .35 gal. And not change is pressure or flow.
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Old 01-06-2013, 12:57 PM   #19
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What is the best way to run hot and cold water supplies for this...?


You still need to run a 3/4" line to the toilet.

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