Tieling Lianggong Valve Co., Ltd

Tieling Lianggong Valve Co., Ltd

- Double Flange Large Size Butterfly Valve



This series of butterfly valves are used for industrial pipelines, as bi-directional open and close and regulation devices. The adjustment range is from 40 to 90 degree full open. If the valve is one-vay used, the recommended direction of pressure is shown on fig when the disc in closed position.

  • The material of parts is selected excellently.
  • The valve use double eccentric structure. The sealing surface friction torque is small during opening and closing.
  • It has reliable sealing structure for bi-direction preventing without any leakage. When it sealed with metal, the leakage in C(B) grade.
  • The rubbersealing ring could be replaced without removing the valve from the pipeline.(DN>=700).
  • The shaft using self-lubricating bearings, the friction is small and does not require oil when running.

  • Body : Ductile iron EN-GJS 500-7(GGG50)
  • Disc : Ductile iron EN-GJS 500-7(GGG-50)
  • Shaft : Stainless Steel SS420
  • Body seat : Stainless Steel SS304
  • Disc seat : EPDM, NBR,
  • Pressure rating : PN10/16/25
  • Flange drilling : BS EN1092-2 PN10/16/25
  • Coating : FBE Min 250 microns

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