Pool valves

Are parts for Jandy and Hayward 2 or 3 way valves interchangeable.

Hi Nico, there are a few different styles of diverter valves made over the years, but, as long as they look the same and have the same size ports, the parts should be interchangeable.  The Jandy valves are the gold-standard of the diverter valves and have been copied well enough that the parts are quite interchangeable for diverter valves with a variety of manufacturer’s names on them…