Can I upsize from 3/4" incoming to 1" on a manifold?

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jmk823

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Hello all,

I am removing all the old plumbing in my home (copper) and replacing it with PEX. I would like to install a manifold.

The incoming water line to my home is 3/4". Many of the (affordable) manifolds I have found have a 1" trunk. Will it cause any problems to use a larger diameter trunk than my incoming water?

Most branches off of the 1" trunk will be 1/2". A few will be 3/4" (sprinkler system, other hose hookups).

I appreciate the advice, thanks in advance!
 
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