Alfa Laval Koltek Shutter Valve. Stainless steel. 3-way valve. Actuator Function: Manual. Designed for use in the food, chemical, pharmaceutical and other industries where sanitary designs are required. Koltek valves meet 3A standards and are USDA approved for dairy, meat and poultry plants. Inlets/outlets: (3) 3 in. dia. S-Line fittings. Overall dimensions: 2 ft. 6 in. L x 8-1/2 in. W x 7 in. H.