The Klintec Threaded Sanitary Check Valves are available in sizes ranging from 1/2" to 6" in materials Stainless Steel SS316L. Ends Connections in Female or Male Threaded NPT / BSPT etc. These threaded sanitary items are designed for vertical as well as horizontal applications in a broad line of service industries of Dairy, Food, Beverage, Pharmacy, Cosmetic & Chemical etc.