Double eccentric soft seal butterfly valve
DN150-4000, PN6-40

Double eccentric, double flanged butterfly valve is widely used in water, sewage water and air medium

Mainly used in water plants, sewage plants, long-distance water transmission and municipal water distribution pipe networks, as on-off valves.

If equipped with a hydraulic control actuator, it can be used to protect the pipe explosion in the dam, replace the check valve in the water plant to protect the opening and closing of the pump, and can also be used as shut-off protection valve in power plant air-cooling island.

main features

• Design acc. to EN 593
• Face-to-face length: acc. to EN 558-1, basic series 14 (DIN 3202, F4)
• With flange ends on both sides acc. to EN 1092-2
• Maintenance-free bushing
• Double O-ring sealing and blind screw holes disk
• Corrosion-resistant and wear-resistant seat
• Possible to replace sealing ring without disassembling the disk
• The sealing ring adjusted automatically depending on the medium pressure to achieve bidirectional sealing
• Unidirectional negative pressure sealing performance
• Tight in both directions acc. EN 1074-2
• Blow-out prevention valve shaft and valve shaft seal
• Worm gear can self-locking and fully enclosed, with mechanical position indicator,maintenance-free
• Specially designed anti-cavitation butterfly valve according to the conditions of the water plant. Can significantly improve the effect of cavitation

other features

• 

  MATERIAL

  • Body：Ductile iron EN-JS 1030 (GGG40)
  • Disc: Ductile iron EN-JS 1030 (GGG-40)
  • Sealing ring: EPDM/NBR/PTFE
  • O-ring: EPDM/NBR/PTFE
  • Shaft: Stainless steel 2Cr13,304,316 or duplex stainless steel
  • Bushing: bronze
  • Stud & nut：Stainless steel A2/A4

• 

  actuator

  • Handwheel
  • Electric actuator
  • Pneumatic actuator
  • Hydraulic control actuator

• 

  protect

  • Body: Internally and externally epoxy coated(comply with heavy corrosion protection practice for buried valve)
  • Disc: Epoxy coated (rubber covered or nylon coated on request)

Product advantages

Product selection

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