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  #1  
Old 7/24/12, 9:54 AM
Richard W. Washington, TREC#7238's Avatar
Richard W. Washington, TREC#7238 Richard W. Washington, TREC#7238 is offline
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Default pipes under sink?

Yesterdays new construction inspection. I found these pipes under one of the master bath sinks. had never seen this before. There was no water softener. The home is on city water supply.
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  #2  
Old 7/24/12, 9:55 AM
Richard W. Washington, TREC#7238's Avatar
Richard W. Washington, TREC#7238 Richard W. Washington, TREC#7238 is offline
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Default Re: pipes under sink?

to clarify. i am not referring to the black primary condensate line.



Richard W. Washington, owner
RW Home Inspections, Inc.
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  #3  
Old 7/24/12, 9:57 AM
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Default Re: pipes under sink?

Tempering valve for the toilet?



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  #4  
Old 7/24/12, 10:28 AM
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Michael Larson Michael Larson is online now
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Default Re: pipes under sink?

Quote:
Originally Posted by jjonas View Post
Tempering valve for the toilet?
That's my guess to prevent the toilet from sweating.



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  #5  
Old 7/24/12, 12:38 PM
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Muhammad R. Qureshi Muhammad R. Qureshi is offline
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Default Re: pipes under sink?

Is that the same as mixing valve?
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  #6  
Old 7/24/12, 1:07 PM
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Stephen W. Stanczyk Stephen W. Stanczyk is online now
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Default Re: pipes under sink?

Site specific temperature mixing valve for the tub / shower. Just started finding these on new construction and in the weirdest places.

You can also use these when you want to keep the old 3 handle style faucets in a tub / shower for aesthetic purposes.




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  #7  
Old 7/24/12, 1:44 PM
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Default Re: pipes under sink?

Keeps you from adjusting your own temp in the shower?
That seems stupid.
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Old 7/24/12, 1:57 PM
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Muhammad R. Qureshi Muhammad R. Qureshi is offline
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Default Re: pipes under sink?

In my area (GTA), we find mixing valves in the basement by the water heater and not for each fixture individually.

As far as I know, water is kept at 140F in the WH tank to keep bacteria growth to a minimum and to slow down the corrosion process inside.

The mixing value reduces the temperature from 140F to a more reasonable temperature which reduces the risk of hot water scalding.

...unless I am mixing this mixing value with something else
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Old 7/24/12, 3:11 PM
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David C. Macy, CMI David C. Macy, CMI is online now
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Default Re: pipes under sink?

I am curious if the house has a tank less or conventional water heater?




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  #10  
Old 7/24/12, 4:32 PM
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Default Re: pipes under sink?

Quote:
Originally Posted by mqureshi View Post
In my area (GTA), we find mixing valves in the basement by the water heater and not for each fixture individually.

As far as I know, water is kept at 140F in the WH tank to keep bacteria growth to a minimum and to slow down the corrosion process inside.

The mixing value reduces the temperature from 140F to a more reasonable temperature which reduces the risk of hot water scalding.

...unless I am mixing this mixing value with something else
OK ,that makes sense.
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  #11  
Old 7/24/12, 6:15 PM
Stephen W. Stanczyk's Avatar
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Default Re: pipes under sink?

It takes the place of a built in temperature regulator found in most new faucets. When I went to put in a new 3 handle H-C-S during a full rehab, the AHJ would not allow it without a "listed antiscald / pressure balance valve" which the 3 faucet did not meet. Thus the balancing valve under the sink next to the tub.




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  #12  
Old 7/24/12, 7:08 PM
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Default Re: pipes under sink?

Was there a tub next to the sink?




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  #13  
Old 7/25/12, 7:54 AM
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Barry Adair Barry Adair is offline
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Default Re: pipes under sink?

comparison or code reference
water tempering valves
http://media.wattswater.com/F-ProdSelectionGuide.pdf

Can
http://www.cashacme.com/_images/pdf_...CodeUpdate.pdf



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  #14  
Old 7/25/12, 11:00 AM
KEVIN WOOD, CMI KEVIN WOOD, CMI is offline
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Default Re: pipes under sink?

Barry we use Union Gas here and this is a great slide show.
http://www.uniongas.com/residential/.../whInstall.htm
Notice the mixing valve in the middle.
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