PEX 1/2 NPT Male Shower valve - replacement kit, full pex set, easy to assemble, no soldering, pressure balancing system - Amazon.com
Moen U140CX-PF N/A M-Core 4 Port Pressure Balanced 1/2" Cold Expansion PEX Tub and Shower Valve - FaucetDirect.com
Treysta® Tub & Shower Valve- Vertical Inputs WITH Stops- Crimp Pex
No Water From a New Mixing Valve - Fine Homebuilding
Want to do my new shower plumbing like this one question is I've heard that you should use copper for the pipe going to the spout. Is this true or will pex