Pneumatic fluorine flanged butterfly valve

Product overview

Product model: D641F/F4/F46

Nominal diameter: DN40~1200mm

Nominal pressure: PN0.6~1.6MPa

Applicable temperature: -20~+200℃

Applicable medium: water, air, natural gas, oil and strong corrosive fluid

Body form: straight-through casting butterfly valve

Valve plate form: vertical plate type (center line type)

Connection form: flange connection

Sealing packing: PTFE F4, PTFE F46


Product Detail

Product description

       Pneumatic fluorine-lined flange butterfly valve is composed of tetrafluoroethylene sealed butterfly valve, pneumatic actuator and triple parts. Pneumatic fluorine-lined butterfly valve adopts full-lined (F3, F4, F46) polymer materials on the flow path, butterfly plate and valve stem, which has good anti-corrosion performance. It is suitable for pipelines with corrosive or cleanliness requirements, such as alkali, reducing agent, hydrochloric acid, nitric acid, hydrofluoric acid, aqua regia, organic acid, strong acid, concentrated vinegar and other strong corrosive media. Using compressed air as the drive, receiving industrial signals to adjust and switch the butterfly valve by cooperating with the positioner or solenoid valve. It is used to adjust the flow rate and intercept the medium in the water supply and drainage and gas pipelines of food, medicine, chemical industry, petroleum, electric power, papermaking, etc.


Main feature

1. Novel and reasonable design, unique structure, light weight, and rapid opening and closing.

2. Small operating torque, convenient operation, labor-saving and dexterous.

3. It can be installed in any position, and the maintenance is convenient.

4. The seals can be replaced, and the sealing performance is reliable to achieve two-way sealing with zero leakage.

5. The sealing material is resistant to aging, corrosion, and has a long service life.


The main technical parameters

Nominal diameter

 DN (mm)

40~1200
Nominal pressure PN (MPa)0.61.01.6
Seal test (MPa)0.661.11.76
Strength test (MPa)0.91.52.4
proper temperatureFluorine rubber: -20℃~200℃
Applicable mediumWater, air, natural gas, oil and highly corrosive fluids
Leak rateComply with GB/T13927-92 standard
Drive methodPneumatic
Configure the actuatorGT, AT, AW series single and double acting pneumatic actuators
control methodTwo switch control, 4~20mA analog signal control


Executive standard

Design standardsGB/T2238-1989
Flange connection sizeGB/T9113.1-2000;GB/T9115.1-2000;JB78
Structure lengthGB/T12221-1989
Pressure testGB/T13927-2000;JB/T9092-1999


Material of main parts

Part NameMaterial
Body(Nodular cast steel, cast steel, stainless steel) +F46
Butterfly board(Gray cast iron, ductile cast steel, cast steel, stainless steel and special materials) +F46
Stem2Cr13, stainless steel
PackingO-ring, flexible graphite


气动衬氟法兰蝶阀(图1)


Main external connection size

Nominal diameterNPS(inch)LPN 1.0MpaPN 1.6Mpa
DN(mm)DD1D2n-dDD1D2n-d
40 1/2106150110884-Φ18150 110884-Φ18136
502    1081651251024-Φ18165 1251024-Φ18143
652/2     1121851451228-Φ18185 1451228-Φ18157
803    1142001601388-Φ18200 1601388-Φ18178
1004    1272201801588-Φ18220 1801588-Φ18185
1255    1402502101888-Φ18250 2101888-Φ18206
1506    1402852402128-Φ22285 2402128-Φ22225
2008    1523402952688-Φ22340 2952688-Φ22275
25010    16539535032012-Φ22405 35532012-Φ22326
30012    17844540037012-Φ22460 41037812-Φ26333
35014    19050546043016-Φ22520 47042812-Φ26393
40016    21656551548216-Φ26580 52549016-Φ30438
45018    22261556553220-Φ26640 58555016-Φ30488
50020    22967062058520-Φ26715 65061020-Φ30540
60024    26778072568520-Φ30840 77072520-Φ33615
70028    29289584080024-Φ30910 84079520-Φ36660
80032    318101595090524-Φ331025 95090024-Φ36720
9003633011151050100528-Φ331125 1050100024-Φ39785
100040    41012301160111028-Φ361255 1170111528-Φ42900
120048    47014551380133032-Φ391485 1390133032-Φ481070


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