Originally Posted by clyon51
Looks like stardard PEX fittings. Any hardware or plumbing shop can fix you up. If that one 90 fitting is secured with a metal clamp, you'll need to cut it off and rent a clamp tool to replace. Optionally you could use "Shark Bite" fittings that don't require clamps.
If the plumbing is Pex, then a Shark Bite is an option. If you can remove the fitting and take it to a local plumbing supply store, they can probably help you out. Shark Bits work on the O.D. of a pipe and are advertised as only working on Pex, Copper, and CPVC. If the OD you have is the same as these then a SB will work.