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Author:
sum (FL)
I have always read that when using PEX tubing, specifically the crimp ring version (not the cold expansion PEX A fittings), due to the restriction of the crimp fittings, that one should not run PEX on the outlet of a shower/tub valve to the tub spout. Reason being the restriction is such that there may be enough back pressure to cause water to come out of the shower.
However, I came across some valves, for example this MOEN U361X, which is NOT a mixing valve but a multi port diverter valve. It has all the inlets and outlets in 1/2" crimp PEX connections.
Here are my questions.
(1) The inlet is a 1/2" crimp PEX connection. So the mixed water is already restricted coming in. Yet it has a three port outlet capable of supporting three devices independently or at the same time. I am having a hard time imagining how it can have enough volume to have a hand shower, a rain shower head and an overhead wall shower head all going at the same time.
(2) The specifications/instructions showed how to install for 2 or 3 devices. It is installed on top of the mixing valve so no tub spout. Can a tub spout be used in this case? Can someone take a side outlet, and run it across, down and back over to run a tub spout? Or can someone install this below the mixing valve and turn this diverter upside down to go down to a tub spout?
I am not planning on using it, I am just curious when I saw this.
Edited 1 times.
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Author:
packy (MA)
funny but all the installation instructions of find are for a different valve body. 1/2 FIPS with the opening reamed out so 1/2 copper fits inside.
this is a good question for moen engineers.
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Author:
hj (AZ)
It is a transfer valve so all the instructions about full size piping do not apply. It shuts off ALL the openings not being used, so back pressure is not a problem.
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Author:
bernabeu (SC)
hj is correct
(gasp ... choke ... gaaaaa ... )
apparently it is used as part of / along with Moen's 'new' M-Core 'mixer valve'
[www.bing.com]
and see the video [www.amazon.com]
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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638
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Author:
hj (AZ)
Gee, I hope you survuved that episode. Hopefully, it will be the last one, since I do not think you could survive two of them.
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Author:
bernabeu (SC)
...... glad to be of amusing service ......
==============================================
"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638
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