The Valve World Asia 2009 Conference & Expo will be held in the Suzhou International Expo Center in Suzhou, China.
Piping and valve professio-nals from West & East can up-date their knowledge of valve applications in a variety of in-dustries with a clear focus on the chemical, petrochemical, power generation, oil & gas and process industries. The event will be bi-lingual and all presentations will be simulta-neously translated in Chinese and English.
There are self-driven valves and operated valves. self-driven valves( like safety valve, relief valve, steam trap, check valve ) are functioning by utilizing its mechanical design or the pressure, direction of its flow medium.operated valve( like gate valve, globe valve, ball valve, butterfly valve ) is fuctioning by actuator( manual, electric, hydraulic, pneumatic etc. ) or the pressure , flow direction of its medium.