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Old 07-05-2008, 06:27 AM   #1
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Pex shower rough in valve, what goes to the shower section?


I am looking for a Pex shower valve. I have found a few but they on;y have Pex for the hot and cold but no pex fitting to the shower section. Is there one out there with pex fittings on the entire shower valve kit? Thanks.

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Old 07-05-2008, 02:47 PM   #2
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Pex shower rough in valve, what goes to the shower section?


I installed Pex all through my house but to be honest I am not sure what your looking for

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Old 07-05-2008, 02:54 PM   #3
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Pex shower rough in valve, what goes to the shower section?


If it's shower only, and it has a sweat or screw in type to the shower, the install an adapter.
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Old 07-06-2008, 11:12 AM   #4
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Pex shower rough in valve, what goes to the shower section?


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I am looking for a Pex shower valve. I have found a few but they on;y have Pex for the hot and cold but no pex fitting to the shower section. Is there one out there with pex fittings on the entire shower valve kit? Thanks.
Are you doing a shower or a tub/shower?

If it's a tub shower you really want to use something besides pex for the shower riser and tub spout. The pex adapters are too small, and they will cause your showerhead to run while you're filling the tub.
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Old 07-08-2008, 03:30 PM   #5
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Pex shower rough in valve, what goes to the shower section?


you can do as Ron suggest and add an attachment to go to copper and then your connection or go to Lowe's they sell pex adapter's that you can screw your connector right on to it and they fit over the pex so no lose of anything.That is what I have and my supply lines screw right to it no leaks ,no lose of pressure or volume and anyone can do it and they work great
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Old 07-08-2008, 04:13 PM   #6
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Pex shower rough in valve, what goes to the shower section?


These work well. Sweat them to the valve body and then hook up the PEX.

Sioux Chief makes these.
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Old 07-08-2008, 09:41 PM   #7
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Pex shower rough in valve, what goes to the shower section?


I think those are expensive in comparison to a copper street 90 and a brass pex - male sweat adapter. If you have to do some soldering anyway, whats 2 more joints while ya have the darn thing hot?
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Old 07-08-2008, 10:28 PM   #8
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Pex shower rough in valve, what goes to the shower section?


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I think those are expensive in comparison to a copper street 90 and a brass pex - male sweat adapter. If you have to do some soldering anyway, whats 2 more joints while ya have the darn thing hot?
I'm with you Alan, but for clean installation with minimal joints, why not? Remember, you're a pro...On a DIY site I'm all for keeping it as easy as possible with as few connections as possible.
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Old 07-10-2008, 09:22 AM   #9
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Pex shower rough in valve, what goes to the shower section?


If you use PEX for a tub spout you will have a very hard time making the spout secure. If this isn't a problem then you can use any of the choices above. I think it is worth the effort to solder at least the tub spout piping into the valve (or male adapter if it is a threaded valve).

If your valve is either threaded or sweat, then you'll have to at least install an adapter before you can transition to PEX. The shower head can be installed using a barbed Drop Ear Ell with a crimp connection. Since the maximum volume allowable through a shower head is 2.5 gpm, the restriction due to the insert fitting isn't an issue. It may be simpler to just solder a sweat drop ear ell on for the shower head while you are at it, the choice is yours.
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Old 07-10-2008, 02:41 PM   #10
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Pex shower rough in valve, what goes to the shower section?


Thanks guys. I am installing a new shower valve on a shower/tub combo.

Ok so I shouldn't run pex from the valve to the drop ear?

It is ok to use pex for the hot and cold inlets but only use copper for the tub stub out?

Thanks Again guys. I appreciate it.
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Old 07-10-2008, 07:48 PM   #11
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Pex shower rough in valve, what goes to the shower section?


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I'm with you Alan, but for clean installation with minimal joints, why not? Remember, you're a pro...On a DIY site I'm all for keeping it as easy as possible with as few connections as possible.
Well, the other option is to just sweat the brass adapters into the valve directly, and use plastic bend supports to make the 90. Not sure what that costs either, but probably still cheaper than a premade 90.
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Old 07-10-2008, 07:50 PM   #12
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Pex shower rough in valve, what goes to the shower section?


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If you use PEX for a tub spout you will have a very hard time making the spout secure. If this isn't a problem then you can use any of the choices above. I think it is worth the effort to solder at least the tub spout piping into the valve (or male adapter if it is a threaded valve).

If your valve is either threaded or sweat, then you'll have to at least install an adapter before you can transition to PEX. The shower head can be installed using a barbed Drop Ear Ell with a crimp connection. Since the maximum volume allowable through a shower head is 2.5 gpm, the restriction due to the insert fitting isn't an issue. It may be simpler to just solder a sweat drop ear ell on for the shower head while you are at it, the choice is yours.
Maybe nobody else has had the same problem, but our problem is having a pex adapter in the tub spout outlet of the valve. The reduced internal diameter of the pex fitting does not allow the water to flow freely out of the tub spout, and causes the showerhead to drip while the tub is filling. I would run pex to the showerhead in a heartbeat, but always copper or even CPVC (if you want to stay plastic)for the tub spout.
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Old 07-11-2008, 07:59 AM   #13
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Pex shower rough in valve, what goes to the shower section?


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Maybe nobody else has had the same problem, but our problem is having a pex adapter in the tub spout outlet of the valve. The reduced internal diameter of the pex fitting does not allow the water to flow freely out of the tub spout, and causes the showerhead to drip while the tub is filling. I would run pex to the showerhead in a heartbeat, but always copper or even CPVC (if you want to stay plastic)for the tub spout.
That makes sense. I can see how that could happen. I've never tried PEX for the tub spout so I've not had this problem. I always use copper for the spout and PEX for the shower riser.

If the tub spout is a screw on, like some high end Kohler spouts, I use a drop ear in the wall with a brass nipple.
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Old 07-11-2008, 09:00 AM   #14
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Pex shower rough in valve, what goes to the shower section?


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That makes sense. I can see how that could happen. I've never tried PEX for the tub spout so I've not had this problem. I always use copper for the spout and PEX for the shower riser.

If the tub spout is a screw on, like some high end Kohler spouts, I use a drop ear in the wall with a brass nipple.
We do the same thing, but some people put a pex adapter in the tub outlet of the valve and run a short piece of pex to a pex drop-ear, and then use a nipple, therefore not actually using pex for the spout, but still creating a restriction at the valve.

I think some people just don't like to solder anymore.
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Old 07-11-2008, 09:20 AM   #15
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Pex shower rough in valve, what goes to the shower section?


We always run copper to the spout.

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