1.DN50-1200(2"~48") 2.PN1.0/1.6(150/200PSI) 3.rubber coated 4.different standards 5.handle,hand wheel,electric,pneumatic Rubber Lined Wafer Type Butterfly ValveFeatures:1. Small in size, light in weight, easy installation and maintenance.2. Simple and compact construction, quick 90 degree on-off operation.3. Minimized operating torque, energy saving.4. Flow curve tending to straight line, ...