... Hot tags: Segmented Ball Valve, China, mill, manufacturer, supplier, factory, wholesale, cheap O Port Ball ValveAn O Port Ball Valve has either ... standard valve.The Huachao O Port Ball Valves are quarter-turn control ball valves for accurate throtting control of fibrous ... proof shaft protection, high flow capacity, splined ball-to-shaft connection for ease of maintenance and zero backlash. Seat ...