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Forum topic by canadianchips posted 01-26-2015 02:01 AM 1177 views 0 times favorited 8 replies Add to Favorites Watch
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2600 posts in 2996 days

01-26-2015 02:01 AM

I have a question for all you LJ plumbers. I have been asking about installing a new shower Delta mixer in my shower-tub. I was told that I should “not” use pex for the connection from mixer to tub spout. This would create too much restriction and the shower head will leak water ? Also do I need to put tee on each hot and cold connection with a 6 inch dead end to prevent pressure on valves or can I connect direct to mixer ?
Everyone seems to have a different answer.

-- "My mission in life - make everyone smile !"

8 replies so far

View TheFridge's profile


9468 posts in 1485 days

#1 posted 01-26-2015 02:06 AM

I’m only a plumber when I forget my belt.

Sorry. I had to.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View Craftsman on the lake's profile

Craftsman on the lake

2791 posts in 3437 days

#2 posted 01-26-2015 02:14 AM

Dunno but.. mine is copper and it is direct. Always has been.

-- The smell of wood, coffee in the cup, the wife let's me do my thing, the lake is peaceful.

View Dark_Lightning's profile


3161 posts in 3108 days

#3 posted 01-26-2015 04:19 AM

The thing won’t leak if the connections are tight. But you may not get enough flow, depending on the ID of the PEX. I use copper in that case; I try to never use galvanized pipe. If you are asking about the “dead ends” to avoid water hammer, do you not already have something already installed in the system for this? It should be in the high point of the system, not necessarily at the particular valve. My current home was re-plumbed before I moved in, and the plumbers did not put in air chambers. I don’t know what people think these days- (cheap, lazy, just don’t know?). I had to do a retrofit, myself.

-- Random Orbital Nailer

View bigblockyeti's profile


5120 posts in 1719 days

#4 posted 01-26-2015 04:57 AM

Personally I don’t trust PEX, the failure points just aren’t as robust as sweated copper pipe.

View Jim Jakosh's profile

Jim Jakosh

20483 posts in 3104 days

#5 posted 01-30-2015 10:57 PM

The Pex tubing is quick and easy to install but I think the 1/2” is too small for the right volume. The connections are very good if done right with the crimping tool. They use it a lot in trailers We have it in our trailer in Az and we have a flow problems with our sinks in the bathroom. We will cut it at various points to see where it drops off. If you have it in the whole house, I see no problem with the riser to she shower head. the flow will be okay. We have Pex to our shower head here in Az with no problems there

The dead heads are shock absorbers if you have air in the lines and it stops the rumble/banging if you have that problem,but they are not always needed. They are cheap to put in the line when you are installing new lines so they are good prevention.


-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View canadianchips's profile


2600 posts in 2996 days

#6 posted 02-01-2015 01:52 PM

Thanks JIm.
Me being ME. I got in touch with an old plumber from where I grew up. He was telling me that these newer one lever “mixer” valves do cause problems. Certain brands. His solution is to use what he called a Twin LL from mixer valve to tub faucett. Then he uses pex up to shower head. He was also okay using pex if the “better” crimper is used. He also told me with the newer shower heads, Rain Nozzle, side nozzle etc a 3/4 pex line is recommended from water supply to bathroom.(More water volume needed)
GO FIGURE we reduce the toilet flush water to save water THEN we increase water volume to wash the STINK off every morning ? Progress ????

-- "My mission in life - make everyone smile !"

View Rick's profile


9600 posts in 3032 days

#7 posted 03-29-2015 04:50 AM


Not sure this exactly what you might be looking for. However, about a year ago I installed a Dual Head Shower Faucet as below. Very Pleased with it. It has only one Connection Point (Screw In). Flow is good from both heads. Top can be adjusted to any type of flow. Hand held is good for getting at those hard to reach places (Arm Pits, ETC …LOL…)

I stopped using a “Plumbers Stick” for connections as it became obvious from a Toilet “BOOM/FLOOD” that it had eaten into the plastic connection. I now use the “Plumbers Tape” (Wound In Direction of Joint) Easy to use and makes for a nice tight connection.

TOILETS: I let the guy at Home Depot talk me into the type shown below instead of the “Ball & Rod”. Glad I did! Works a lot better. The other 2 toilets will get the same one when their time comes. It Puts a lot of water in under the Rim witch aids the Flush and washes “The Stink” off quite nicely …LOL…

Hope this helps.

Regards: Rick

PS: Great Signature Line!

-- LIFE is what happens when you're planning on doing Other Things!

View Rick's profile


9600 posts in 3032 days

#8 posted 04-01-2015 06:10 PM

OOPS! I didn’t realise that this Post was from January.

-- LIFE is what happens when you're planning on doing Other Things!

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