Allen Hart - Copper Pipe Joining: Pressfit vs. Soldering...

Unlike soldered or welded fittings, press fittings can be rotated after installing. If a press fitting isn't in the desired position or alignment due to improper planning or corrections to the assembly, you can rotate it. If you rotate a Viega #ProPress copper or stainless fitting more than five degrees, it must be re-pressed and you will need to ensure proper alignment of the press jaws for ½” to 2” sizes. But remember, it's vital to follow proper technique to avoid any malfunctions or damages