Your location:

/ Valve products / Butterfly valve / Pneumatic Butterfly Valve / D671F Pneumatic Fluorine-Lined On-Off Butterfly Valve
全国销售热线:0577-67378222

Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI
  • D671F Pneumatic Fluorine-Lined On-Off Butterfly Valve

  • More Pneumatic Butterfly Valve>>

  • More Butterfly valve>>

  • More valve>>

Contact Us
  • Phone:+86(577)6730 7899
  • Mobile:+86 13362776253
  • Fax:+86(577)6738 7099
  • Email:carrie@kaiweixi.com
  • Address:No. 1, Linxia Road, Sanqiao Industrial Zone, Oubei Street, Yongjia County, Zhejiang Province,china
  • Website:https://www.kaiweixi.com
Other valve products you may need
  • D643H Pneumatic Metal-Sealed Butterfly Valve
  • D673H Pneumatic Triple-Eccentric Control Butterfly Valve
  • ZDG High-Performance Shut-off Butterfly Valve
  • D671X Pneumatic Wafer Butterfly Valve
  • D641X Pneumatic Flanged Butterfly Valve
D671F Pneumatic Fluorine-Lined On-Off Butterfly Valve

D671F Pneumatic Fluorine-Lined On-Off Butterfly Valve

  • Model:D671F-10C/D671F-16C/D671F-25C/D671F-10P/D671F-16P/D671F-25P
  • Specification:DN50~400
  • Temperature:-40~180℃
  • Medium:Corrosive media requiring rapid shut-off
  • Pressure:PN1.0~2.5MPa
  • Connection method:Wafer
  • Driving method:Pneumatic
  • Material:WCB+PTFE, CF8+PTFE
x

Add QR code to serve you!

x

Add QR code to serve you!

x

Add QR code to serve you!

x
D671F Pneumatic Fluorine-Lined On-Off Butterfly ValveOverview


The D671F pneumatic fluorine-lined shut-off butterfly valve is an industrial automation execution unit specifically engineered for harsh and highly corrosive working conditions. This valve integrates a high-performance pneumatic piston actuator with a fully lined centerline butterfly valve body. The core technology involves an overall molded lining of F46 (FEP) or PTFE on the internal cavity and disc surfaces, completely isolating the medium from the metal substrate. By receiving air signals from control systems, the actuator drives the disc to rotate within a 0-90 degree range, achieving rapid shut-off or opening of aggressive media. With its superior chemical resistance, bubble-tight sealing, and compact design, the D671F series is widely utilized in petroleum, chemical, pharmaceutical, and electronic industries where corrosion protection is paramount.

Product Image of D671F Pneumatic Fluorine-Lined On-Off Butterfly Valve

D671F Pneumatic Fluorine-Lined On-Off Butterfly ValveCharacteristic

1.Superior strong corrosion resistance:All media-contacting surfaces are lined with a uniform fluoroplastic layer, providing resistance against hydrochloric acid, sulfuric acid, aqua regia, and strong alkalis, ensuring long-term structural integrity.
2.Bi-directional bubble-tight sealing:Utilizing an interference-fit sealing principle, the disc edge fits tightly against the lined seat during closure. It offers excellent elastic compensation for zero-leakage in both directions, meeting ANSI Class VI standards.
3.Rapid response time:Equipped with high-thrust pneumatic piston actuators, utilizing compressed air to generate instantaneous torque for full-stroke action within 1-3 seconds. Ideal for emergency shutdown (ESD) applications.
4.Low flow resistance and high capacity:The disc features a streamlined, ultra-thin design. When fully open, the flow path is nearly straight with an extremely low resistance coefficient, reducing pressure drop and energy consumption.
5.Compact and lightweight design:Flanged or wafer designs significantly shorten the face-to-face length and weight. This saves space and reduces the mechanical load on the piping and its supports.
6.Vacuum and temperature stability:Advanced molding technology ensures the lining is firmly anchored to the metal, effectively preventing lining peeling or collapse under vacuum or pressure fluctuations.
7.Intrinsically safe attributes:Driven by clean compressed air, it eliminates spark risks, providing natural explosion-proof safety for hazardous oil, gas, and chemical zones.
8.Modular maintenance and durability:The refined design features minimal wearing parts. Actuator-to-body interfaces are standardized, allowing for online inspection of seals without removing the valve from the line.

D671F Pneumatic Fluorine-Lined On-Off Butterfly Valvestructure principle

Structural Drawing of D671F Pneumatic Fluorine-Lined On-Off Butterfly Valve


List of Component Names and Materials

Part NameMaterial
Upper & Lower BodyWCB+PTFE, CF8+PTFE
Valve SeatCast steel
Disc with StemCast steel, Stainless steel, F46/F4 lined
PackingF4 (PTFE)
Gasket/LiningSilicone rubber
Worm Gear HandleDuctile iron


D671F Pneumatic Fluorine-Lined On-Off Butterfly Valvetechnology parameter

Performance Specification Sheet

Performance Specification Sheet
Nominal Pressure1.01.62.5MPa
Strength test pressure1.52.43.8
Sealing test pressure1.11.762.8
Applicable Temperature-40~180



D671F Pneumatic Fluorine-Lined On-Off Butterfly Valvestandard size

Standard requirements for external dimensions

1. The structural length of the valve shall comply with the standard of GB/T12221

2. Connecting flanges according to GB/T17241.6 standard


Outline Drawing of D671F Pneumatic Fluorine-Lined On-Off Butterfly Valve

Outline dimension table

DN (mm)DN (inch)Face to Face (L)HH1AA1D1 (0.6MPa)n-Φd (0.6MPa)D1 (1.0MPa)n-Φd (1.0MPa)D1 (1.6MPa)n-Φd (1.6MPa)
5024363438125801104-141254-181254-18
6521/24670453125801304-141454-181454-18
8034683478125801504-181608-181608-18
100452105519125801704-181808-181808-18
1255561157133251902008-182108-182108-18
1506561377493251902258-182408-222408-22
2008601648433251902808-182958-2229512-22
250106820694736323033512-1835012-2235512-26
3001278230101336323039512-2240012-2241012-26
3501478248104636323044512-2246016-2247016-26
40016102289113536323049516-2251516-2652516-30
45018114320132846530055016-2256520-2658520-30
50020127343122654632560020-2262020-2665020-33
60024154413139454632570520-2672520-3077020-36
70028165478153454632581024-2684024-3084024-36
80032190525165954632592024-3095024-3395024-39
900362035851748617450102024-30105028-33105028-39
1000402166401805632455112028-30116028-36117028-42
1200482547552035632455134032-33138032-39139032-48
1400562799102310790550156036-36159036-42159036-48
16006431810302845868580176040-36182040-48182040-56
18007235611403060868580197044-39202044-48202044-56
20008040612503350965600218048-42223048-48223048-62