USDA valve is designed specifically for low pressure/vacuum conveying, bulk material handling and airflow systems for the diary, food and pharmaceutical industries where equipment must meet USDA sanitary levels. This valve received the USDA acceptance certificate as well as the BISSC certification. Valve features outboard bearings and thumb bolts for tool-free service. By design the shaft/flap assembly and bearings can easily be removed for sanitation, service and inspection. Jacob Tubing, L.P. Box 754000 Memphis, TN, 38175