... . 4, Flanged connection You are buying the best 3 way ball valves here.Product Description:Design & Manufacture: API 6D, ASME B16.34 ... & Test: API 598, API 6D Operation: Manual, Worm Gear, Electric, Pneumatic Materials Availability: WCB, WCC, LCB, LCC, CF8, CF8M, CF3, CF3M ... : File safe Design as per API 607/6FA 3 way ball valves, flanged, high quality