Which PEX sizes according to …
In my small house I’m considering changing my whole system to PEX. Manifold system. A 3/4 inch pipe will run to the manifolds.
According to a PEX design guide pdf file I downloaded the other day
http://www.toolbase.org/PDF/DesignGu…esignguide.pdf
3/8 inch pipes can be run from the manifolds to most fixtures. Can anybody verify that this will work out ok?
This is what it says according to the above guide, in section 1:75.
Minimum Sizes of Fixture Water Supply Lines
in Manifold Systems
Fixture – Minimum Pipe Size(in.)
Bathtubs and Whirlpool Tubs – 1/2
Tub and Shower – 1/2
Shower only (Single Head) – 3/8
Bathroom Lavatory – 3/8
Water Closet, Residential – 3/8
Water Closet, Commercial – 1/2
Kitchen Sink – 3/8
Laundry Washing Machine – 3/8
Utility Sink – 3/8
Bar Sink – 3/8
Urinal, Flush Tank – 3/8
Urinal, Flush Valve – 1/2
I have seen one fellow do this in his home,
I was not very impressed with it..although it will
probably work ok becasue all faucest and stops will
eventually funnel down to that size at the fixture…
the pressure balanced faucets would concern me and I
would rather opt to run 1/2 pex everywhere instead..
its realy not that much trouble or expence to run the 1/2 over
the 3/8 anyway …
But You could also mix them up with 1/2 going to all the
larger bath faucets and 3/8 going to the toilets and lav faucets.
Zurn Pex has a class action lawsuit on their brass fittings right now.
I would not trust it……..
stick with the stuff that the manablock system wants you to use….
