
Are there are problems with this manifold design?
I have a 1-in meter set that has a 1-in Pex stubline coming off of the meter. I want to branch off of that stub line and have two sides.
- Side one is going to lead to an rpz / backflow and then to a 1 1/4 poly trunk for irrigation.
- Side two is going to lead to a 1-in poly trunk line for no-freeze spigots.
The no-freeze spigot trunk line sits in front of the rpz so that they can be charged all year even after the irrigation side is flushed.
I have added a crude diagram to this post to illustrate the following. Everything at the end if the stub is going in a box.
First, there will be a male threaded viega press fitting on the pex stub, then off of that - an all female 1" brass T.
Side 1:
- Nipple from brass T to union ball valve.
- Male / female elbow from ball valve to brass riser that leads to RPZ. (Male end goes into ball valve. Female end has the riser in it.)
Side 2:
- Nipple from brass T to union ball valve.
- Male to poly barb in union ball valve.
- Barb to poly spigot trunk
Is this a reasonable design, any cons or things of note?