Pipe Fitting: PEX, Copper & PVC

The three piping materials a residential plumber touches every day. Copper (Types M/L/K, solder vs ProPress, flux and flame safety), PEX (PEX-A vs PEX-B, expansion vs crimp vs cinch tooling, support spacing), and PVC/ABS for DWV (solvent welding, slope, trap arms, support). Ends with rough-in heights and hot/cold convention so your stub-outs land where the finish trade expects them.