The Pentair 261050 Hi-Flow Side Mount Multiport Valve works with Pentair sand filters with 2 inch ports. This valve is pre-plumbed for sand filters and designed for maximum working pressures and performance. The large one piece handle makes operation simple and the 2 inch PVC slip ports make installation easy. The high efficiency center intake diverter is heavy duty and made of glass filled Noryl thermoplastic for added strength and heat resistance. The valve features positive lock, six position operation including a special winterizing position.