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Mixing Valve Manifold

 
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Old 10-10-2018, 02:20 PM   #1
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Mixing Valve Manifold


Hey Plumeros...

Seen this at several production homes lately. What's the point? All hot/cold water mixed at a central location? Is this a code requirement? Best practice? Liability minimizer? Please enlighten me.
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Old 10-10-2018, 02:25 PM   #2
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Re: Mixing Valve Manifold


hmm.... not sure why it's rotated like that
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Old 10-10-2018, 02:31 PM   #3
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Re: Mixing Valve Manifold


I looks like all supply lines run off the manifold... almost like a home run to an electrical panel?
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Old 10-10-2018, 04:35 PM   #4
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Re: Mixing Valve Manifold


It looks like only one line is getting mixed there, I wonder where that one goes.


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Old 10-10-2018, 07:38 PM   #5
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Re: Mixing Valve Manifold


That is a waste of pipe.

Scratch that, it is a waste of whatever they are using in place of pipe.
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Old 10-10-2018, 07:40 PM   #6
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Re: Mixing Valve Manifold


The one that is actually mixed most likely goes to a free standing tub.
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Old 10-10-2018, 09:06 PM   #7
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Re: Mixing Valve Manifold


Only one of those lines is mixed hot and cold.

The rest is called a manifold system.

The advertised reason for it, is more consistent water pressure and volume throughout the house, ease of installation, and less fittings to possibly fail at some time in the future.

The real reason is for Uponor and Viega to sell expensive "Mani-block" systems, and miles upon miles of plastic tubing that will end up in a landfill in the near future.

It also has the added benefit of being a plug-and-play system, so any mouth breather can pipe a house, without having to resort to the pesky inconvenience of learning to pipe a house properly, sweat fittings, and learn about pressure, volume, co-efficient of friction, developed line length, etc.
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Old 10-10-2018, 09:41 PM   #8
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Re: Mixing Valve Manifold


so, where does that one mixed line run? is that blue knob on the bottom to adjust the temp and if so, what device would you want to supply a constant hot temp too?
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Old 10-10-2018, 09:44 PM   #9
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Re: Mixing Valve Manifold


Quote:
Originally Posted by bwiab View Post
The one that is actually mixed most likely goes to a free standing tub.


This is the answer. Itís mixed at the manifold because there is no aesthetic location for a mixing valve near the fixture



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Old 10-16-2018, 09:49 AM   #10
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Re: Mixing Valve Manifold


Thanks for your input guys. Plumber I spoke with said there is another brand that makes a manifold similar to this that actually has a shut off at each connection. That makes a little more sense where a home owner could shut off each fixture individually, but as configured, I don't see any value in it. Even with the shut offs I don't think I would recommend it unless someone asked for it.

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