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 pex
Author: homer326 (AL)

Why would the shower valve loose pressure using pex for the down spout or why cant u use pex for the downspout

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 Re: pex
Author: North Carolina Plumber (NC)

It's because the pipe's internal diameter is small enough to cause a restriction, water will go up through the shower head at the same time its suppose to be going out the spout.

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 Re: pex
Author: hj (AZ)

It doesn't "lose pressure", the reduced diameter "creates pressure and forces the water back up into the shower head.

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