The grey Pentair valves are PVC ... I think they are like the cheaper grey Jandy valves (although the Jandy are still CPVC)
The black Pentair valves are CPVC and more or less equivalent to the Jandy Neverlube ... similar lifetime warranties as well.
The black Pentair valves are CPVC and more or less equivalent to the Jandy Neverlube ... similar lifetime warranties as well.