Image Large Diameter Gate Valve Storz x Storz Product Options Part Number Length Width Height Storz Size Material SGV440 9" 6.25" 19.5 4" x 4" High Strength Aluminum Alloy SGV450 9" 7.75" 19.5 4" x 5" High Strength Aluminum Alloy SGV540 9" 7.75" 19.5 5" x 4" High Strength Aluminum Alloy SGV550 9" 7.75" 19.5 5" x 5" High Strength Aluminum Alloy