Worm-actuated Wafer Butterfly Valves
 
Nominal diameter:
  
Features:
*Small-size, convenient, easy to assemble and disassemble, maintenance, fix at any      positions
*Simple-structure,compact, quick 90 degrees on-off operation, small operating torque, light and handy.
*More than then thousand times of on-off experiment, longer operating life.
*Almost linear flow characteristic, better regulating performance.
*Full sealed, zero gas leakage.
*Different materials in every parts, suitable to different mediums.