Compatible with Pentair 2" CPVC check valve 263042 ONLY. Improved chlorine-resistant and corrosion-resistant fabrication on flapper and rubber seal. Upgraded stainless spring & pin for stronger spring tension. Enhanced cover construction to be anti-crack and sturdy. Not compatible with Pentair FullFLOXF 2-Way & 90 Degree check valves 263060 & 263077, and does not work with Zodiac Jandy Check Valves 7235, 7236, 7305, 7511, 7512. This 2-inch CPVC check valve 263042Z features improved chlorine-resistant and corrosion-resistant fabrication on the flapper and rubber seal. The upgraded stainless spring and pin provide stronger spring tension, while the enhanced cover construction ensures it is anti-crack and sturdy. Color: Black Material: ABS Package Contents: 1x Check Valve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.