Thanks. Just purchased two of these below(I found the exact brand) and will replace this week.B,
Normally the body of the valve is fine, it is the internal seals that fail. You can buy the "guts" and rebuild them. You'd want to buy a rebuild kit for the brand that you have.
Here is what the basic kit looks like... Amazon.com: Swimables Valve Insert Replacement for All Jandy 2 Way and 3 Way Valves - Neverlube Diverter Valve Kit 4720 Replacement for Zodiac 2 Port or 3 Port : Patio, Lawn & Garden
Thanks,
Jim R.
Waterway Plastics 806105102867 Truseal Diverter Kit Amazon.com: Waterway Plastics 806105102867 Truseal Diverter Kit : Patio, Lawn & Garden