Double Flange Butterfly Valve

  • Category:Butterfly Valve
  • Material:Cast Iron, Nodular Iron, Cast Steel, Stainless Steel
  • Standards:GB/T2238-1989,API609,JIS B2064
  • Certificate:Mill Certificate
  • Packing Details:Plywood Case
  • Fob Price:Get Latest Price Now
  • Place of Origin:China
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Details

China Double Flange Butterfly Valve:

The Flange Wafer Butterfly Valve is composed of the body, disc, seat, stem and worm gear, used in many industries such as water, steel food, medicine, chemical, oil, power, textile, paper..etc to adjust the flow rate or intercept the medium in the as or water supply, drainage pipe line.

Standard:

Design Standard:GB/T2238-1989,API609,JIS B2064
Face to Face: GB/T9113.1-2000;GB/T9115.1-2000;JB78
Structure Size Standard:GB/T12221-1989
Pressure Test Standard:GB/T13927-1992;JB/T9092-1999

Technical Specification:

Nominal Size DN(mm) 50~2000
Nominal Pressure PN(MPa) 0.6 1 1.6
Seal Test(MPa) 0.66 1.1 1.76
Strength Test (MPa) 0.9 1.5 2.4
Applicable Medium Water, Air, Gas, Oil, Sea Water, Acid and weak corrisive fluid

Main Parts & Material:

Parts Name Material
Body Cast Iron, Nodular Iron, Cast Steel,Stainless Steel
Disc Nodular Iron with Galv, Cast Steel,Stainless Steel, Bronze
Stem 2Cr13、Stainless Steel
Seal Ring NBR, PTFE, CR, EPDM,VITION...
Packing O Ring, Flexible Graphite

Seal Material:

Seal Material CR NBR EPDM PTFE SI VITON NR PA
Max Temperature 82℃ 93℃ 150℃ 232℃ 250℃ 204℃ 85℃ 93℃
Min Temperature -40℃ -40℃ -40℃ -268℃ -70℃ -23℃ -20℃ -73℃
Suitable Service Temperature 0~+80℃ -20~+82℃ -40~+125℃ -30~+150℃ -70~+150℃ -23~+150℃ -20~+85℃ -30~+93℃

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