... dimensiions adopt short series, and light weight valve is adopted, so as to save ... the valve can be operated withoyt blocking.4.The valve adopts wafer type connection.5.The wedge type limit ... ZG1Cr18Ni9Ti, ZG1Cr18Ni12MoTi, CF8, CF8M, CF3, 2Cr25Ni20Seal type: Stainlesss Steel Hard Seal, Teflon Soft SealLeakage: Stainlesss ... Pneumatic, manual, umbreall, gear, electric Wafer rising Stem Knife Gate Valve