While ProPEX® F1960 expansion fittings and PEX press connections are both approved for making joints with PEX pipe, how they connect greatly impacts system performance. Using the ProPEX cold-expansion method with a ProPEX expansion ring, the PEX-a pipe and ring expands over the ProPEX fitting to maintain full flow, while press fittings insert inside the pipe, restricting flow and lowering performance. With clear visual confirmation and no risk of dry fits, ProPEX helps plumbers and contractors achieve consistent, reliable PEX plumbing system installations.