Double eccentric butterfly valve (TH-BTV-DE)

Marine industry, Water supply and drainage, shipbuilding, water treatment and other systems, DN1400 to D3800, NBR/EPDM/VITON, Certificates & Approvals: DNV-GL, Lloyds, DNV, ABS, BV, Standards: EN 593,  API609


6 + 2 = ?

Double eccentric butterfly valve (TH-BTV-DE)

Area of application

Marine industry, Water supply & drainage, fire fighting, shipbuilding, water treatment and other systems

Data sheet of Double eccentric Butterfly valve

Type:Double eccentric
Size & Connections:DN1400 to D3800
Medium:Air, Inert Gas, Oil, Seawater, Waste water, Water
Materials:Cast Iron / Ductile Iron/ Carbon Steel / Stainless
Steel / Alu Bronze
Pressure Rating:PN10, PN16
Temperature:-30°C to 200°C
Seat/Lining: Replaceable Liner / Bonded Liner
Certificates & Approvals: DNV-GL, Lloyds, DNV, ABS, BV Type Approval
3.1 & 3.2 Cert (on request)


  • Design and Manufacture Conform to EN 593、 API609
  • Flange dimensions Conform to EN2632
  • Face to Face dimensions Conform to DIN3202 F4
  • Topwork’s dimensions Conform to ISO5211
  • Testing Conform to ISO5208

Material of Parts

Part nameMaterial
BodyASTM A536 65-45-12/ASTM A126 B, EN-JL 1040 (GG-25), EN-JS 1030 (GGG-40), EN-JS 1049 (GGG 40.3), Stainless steel (1.4408), Alu-Bronze
Disc / PlateDI+NI,CF8/CF8M,C954/C958
EN-JS 1030 (GGG-40)
Stainless steel (1.4408)
Shaft / stemSS431/SS420/SS410/SS304
Seat / liningNBR/EPDM/VITON
Taper pinsSS416/SS316


  • Worm-gear/hand-wheel
  • Electric-actuator
  • Pneumatic-actuator
  • Hydraulic-actuator

Double eccentric butterfly valve features

  • Double eccentric butterfly valve is also called high-performance butterfly valve, which is mainly used for water drainage in water plants, power plants, steel smelting, chemical industry, water source engineering, environmental facilities construction, etc.
  • It is especially suitable for waterway pipelines as regulating and shut-off equipment.
  • Compared with the center-line butterfly valve, the double eccentric butterfly valve is more resistant to high pressure, longer life and better stability.
  • Reasonable design, compact structure, easy assembly and disassembly, and easy maintenance.
  • The eccentric structure is adopted to reduce the friction of the sealing ring and prolong the service life of the valve.
  • Completely sealed with zero leakage. Can be used in ultra-high vacuum conditions
  • Replace the valve plate seal ring, butterfly plate, rotating shaft and other materials, applicable to multiple media and different temperatures

Double eccentric butterfly valve Photos


Wafer type butterfly valve with worm
lug type buttefly
U type flange butterfly valve (11)
Double flange butterfly valve (7)
double eccentric butterfly valve (2)