I plan to add a new bathroom, and some old plumbing should also be replaced. I'm not comfortable using a torch and solder, so ...
The answer depends on the type of pipe you're using and what ... a chemical bond between each solvent — primer and cement. While separate CPVC and PVC primers exist, you're likely to find ...
Sch 80 PVC fittings have thicker walls to 630 psi, which lets them withstand higher pressures for industrial applications.