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Posted by BobK207 on September 11, 2008, 4:17 pm
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>
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> > > =A0 Hello again,
> > > =A0 =A0I 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.
> > > =A0 I spoke with a guy from a plumbing supply place today who said th=
at
> > > 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.
> > > =A0 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 bu=
t
> > > didn't find a plumbing newsgroup) =A0 =A0Thanks again for the info.
>
> >http://www.toolbase.org/Design-Construction-Guides/Plumbing/pex-desig...
>
> > R- Hide quoted text -
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> > - Show quoted text -
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> =A0 Rico,
> =A0 Thanks for the link;lotsa good info. I am now thinking of going with
> the Uponor/Wisbro system and a trunk and branch config. =A0Uses 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
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