If you didn't pump that often with your first baby, did you still get new pump parts for your second?

I pumped occasionally with C, probably on average a few times a month for about a year. Have a medela pump in style (the generic insurance style). I imagine I will need new membranes but I'm thinking I can just use the same tubing and sterilize the flanges and other pump parts? I put the pump away about a year and a half ago. Don't plan to pump that often for this one either.