Applicable scope:
  They are used in the pipelines and vessels for conveying vari-ous corrosive and non-corrosive fluid media in the engineering systems of water supply,generating,petroleum.gas(natural gas),chemicals,smelting,food(drinks),medicine,paper-making,shipping and environmental protection and also for regulating and cutting off the flowing of media. 

Features:
1.It is single and compact in structure and light in weight,and easy for assembly and disassembly,and maintenance.
2.The operating torque of it is small.When turning 90(,it can open or close with light and fast action.
3.It is smallin flowing resistance and good in energy-saving effect,with discharge characteristic approximating inclined straight line.
4.It is featured by reliable sealing,zero leakage with ten thou sands of opening and closing times.
5.The valve can be made of various materials,adapted to all kinds of media.