House was built in 2006 in Southern Calif.
http://i187.photobucket.com/albums/x296/dawlita/P1010787.jpg
http://i187.photobucket.com/albums/x296/dawlita/P1010828.jpg
Looks like Pex
I agree pex…
manabloc distribution manifold with pex pipe
…for in-the-floor heating. :mrgreen: It’s a heating system.
John Kogel
www.allsafehome.ca
not necessarily, we have them here (Texas) just for standard distribution, no radiant heat present, and the red is hot, blue is cold supply 
No. It is the water distribution system. Nothing to do with a radiant heating system. Barry is correct.
Post 6 was to show post 5 that post 1 is NOT in-floor heating, or any type of heating.
Only wanting to clarify.
Word on the street is that one of the larger tract home builders in the metroplex (Barry, think F&J) quit using the manablocs and is using the Pex by itself.
Apparently they install enough of them that leaks were common.
Bruce,
at under $50 sq ft they have more problems than just a few leaks
i try to avoid them cuz the reports are so long 
thanks everybody
Inspected a 2 year old log cabin that had this exact same manifold last year. Client insisted on testing the operation of the plastic key valves himself and got the owner’s blessing. If I had a PEX system installed in my house, I wouldn’t let the plumber install this one …
I never see pex in this neck of the woods.
Is the manifold problem all at those individual connections ?
The valves operated very stiffly. It was nerve-wrecking watching the client trying to force them closed. I thought for sure he was going to snap one of them.
I’ve never been a fan of plastic plumbing valves, anyways.
To bad ,as it sure looks pretty.
Reminds me of a breaker panel,and knowing they are zoned from one location seems logical.