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Quick Details

  • Standard or Nonstandard: Standard
  • Structure: Butterfly
  • Pressure: Medium Pressure, PN10 PN16,Class150
  • Power: Manual
  • Material: Casting
  • Temperature of Media: Normal Temperature
  • Media: Water,Oil,Gas etc.
  • Port Size: 50mm-400mm
  • Place of Origin: Zhejiang, China (Mainland)
  • Model Number: D343X
  • Brand Name: TANA or OEM
  • Application: General
  • End connection: Wafer,Flange,BW
  • Standard: DIN3354,API609
  • Connection ends: double flange butterfly valve
  • Body material: Ductile iron
  • Disc: Ductile iron
  • Seat: EPDM
  • Stem: SS416,SS304,SS316
  • Operated: Lever,Gear operated
  • Size: 2"-48" or DN50-DN1200

Packaging & Delivery

Packaging Details Plywood case
Delivery Time we will ship them in 20 days after payment

Ductile iron concentric rubber seal Double flange butterfly valve dn250 pn16

Design Features

Concentric structure, bi-directional seal

Non-peeling seat-to-body structure

Spherical design for plate and seat

Non-pin connection

Low valve operating torque

Flow curve tending to straight line


Technical Specification

Size 2"-48" or DN50-DN1200  

Pressure: Class150Lb or PN10/16

Material: Cast iron, Ductile iron,CF8,CF8M

Design & Manufacture Std.: API609,MSS SP-67,MSS SP-68,DIN3354

End Connection Std.: API609

Test Standard:API598,EN12266.1

Structure Type: Center Line Pattern,concentric Pattern

Operated Way:Lever,Gear,Pneumatic,Electric Actuator

Double flange butterfly valve main material list

NameDuctile iron  concentric rubber seat Double flange butterfly valve dn250 pn16
Body cast iron,ductile iron,WCB,stainless steel CF8,CF8M
Seat NBR,EPDM,Viton
DiscDuctile iron,WCB,stainless steel CF8,CF8M,Al-Bronze C95800
End ConnectionWafer,Flange
OperatedManual,Worm Gear,Pneumatic,Electric-Motorized
Disc TypeWith-pin,One stem no-pin,Double stem no-pin
Product showroom

Quality control


production line






contact with us

 We provide you with sincerely service.if you are interested in our valves,contact us NOW!
Phone:+86 1890638592
Whatsapp:+86 1890638592

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China (Mainland) | Manufacturer, Trading Company
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