On Sep 11, 7:48*am, Tim wrote:
On Sep 10, 10:58*am, RicodJour wrote:



On Sep 10, 12:36*pm, Tim wrote:

* Hello again,
* *I am continuing to gather info for the new house,this time
concerning plumbing. I had been thinking about the Manablock
system,basically a plastic(PVC) manifold known as a "home run" system
in which there are seperate shut off valves for every outlet and, I
assume, fixture. The piping is flexible Pex tubing,which seems like a
good idea,but the Manablock sys. seems to use a whole bunch of
tubing.
* I spoke with a guy from a plumbing supply place today who said that
many plumbers today are using the Wirsbo system which utilizes 3/4"
trunk lines to smaller manifolds that I assume are located close to
the areas they will supply,branching off into 1/2" or 3/8" tubing to
supply the end fixture.
* Does anybody have experience w/ these systems,or can you lead me to
a resource for more info,perhaps a newsgroup such as this(I looked but
didn't find a plumbing newsgroup) * *Thanks again for the info.

http://www.toolbase.org/Design-Const...bing/pex-desig...

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* Rico,
* Thanks for the link;lotsa good info. I am now thinking of going with
the Uponor/Wisbro system and a trunk and branch config. *Uses less
pipe,better fittings and warranty,and it seems to me one would want
shut off valves near the fixture (as opposed to a home run sys) should
a leak or problem occur. Appreciate the info man.

Tim

Tim-

My home run systems have manifold shutoffs AND fixture angle stops.

In a home run system the PEX is continuous from manifold to angle
stop.

I used the Pro-PEX brass fittings..hard to beat those.

Gotta have fixture angle stops....manifold shutoffs are a nice extra
feature.

branch and main system has a lot more fittings & connections

Home run only has a connection at the manifold & the angle stops. My
2 bath, kitchen & laundry only had 32 "expansions"

A branch & main will have a lot more and they're be all over the
place. Branch & main hot water waits are longer & flow variations can
be worse.

cheers
Bob