guillotine valve with Pneumatic Drive for easy operating 2''~20'' PN6/PN10/PN16/PN25/150lb ... :WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12M02Ti, CF8, CF8M, CF3, CF3MSeal type: hard seal, soft sealLeakage: hard seal:Grade D (Liquid0.1XDNmm³/s) soft seal:grade ... A(Zero Leakage)Accessories:Flange Operation:hand wheel,sprocket drive,gear ...