Paragon Stark 6 Inch 3-Way Backwash Valve With Flanges - V3-06 $2,440.02 Paragon Stark 6 Inch 3-Way Backwash Valve With Flanges - V3-06 Paragon Stark backwash valves are designed specifically for the Stark Series of commercial sand filters by Pentair Paragon. The valves are corrosion resistant and available in 2-way or 3-way... Add to Cart