Hello,
I have city water with good pressure that comes in off the street in a 1/2" copper line.
I am going to install a Manabloc Manifold and have a couple questons.

1. Can I use a copper to PEX coupling where my water enters my house (after the stop valve and meter of course)?
2. If so and since the manabloc inlet is 1" should I use a 1/2" copper to 1" Pex coupling and then run the 1" PEX to a Tee feeding hot water heater, and Manabloc manifold, or just run the 1/2" PEX to hot water heater and manifold?


Thank you,
Mike

You should immediately upsize from the 1/2" copper water service pipe to the 1" PEX.

I second that

Thx for the input, I appreciate it, will be picking up the 1" pex tomorrow