Compared with conventional gate and globe valves, butterfly valves achieve high performance near to perfection with its pressure resistance and durability. Especially in vessels, the Butterfly Valves enjoy high reliability and when compared with the conventional valves, the Butterfly Valves are excellent in the following aspects: (1) light and compact, (2) maintenance is easy, (3) labour-saving ease of operation, and (4) low cost. 3. Center Handle Actuator