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pneumatic PTFE-lined butterfly valve

Pneumatic PTFE-lined butterfly valve

The pneumatic fluorine -lined wafer butterfly valve adopts a PTFE -lined butterfly plate with a spherical sealing surface. The valve is easy to operate, has tight sealing performance, and prolongs its service life; it can be used for quick shut-off or flow regulation. Pneumatic valves are suitable for applications requiring reliable sealing and good adjustment characteristics.

The valve body adopts a split type, and the seal at both ends of the valve shaft is controlled by the rotating base surface between the butterfly plate and the valve seat plus fluorine rubber; it ensures that the valve shaft does not come into contact with the fluid medium in the cavity. It is widely used in the transportation of liquid and gas in various types of industrial pipelines, and the use of severe corrosive media, such as sulfuric acid, hydrofluoric acid, phosphoric acid, chlorine, strong alkali, aqua regia and other highly corrosive media.

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Main features of pneumatic fluorine -lined wafer butterfly valve

  1. Novel and reasonable design, light weight, quick opening and closing.
  2. Small operating torque, convenient operation, labor-saving and smart.
  3. It can be installed in any position and easy to maintain.
  4. The sealing parts can be replaced, and the sealing performance is reliable and can achieve two-way sealing and zero leakage.
  5. The sealing material has the characteristics of aging resistance, corrosion resistance and long service life.

Pneumatic fluorine -lined wafer butterfly valve adopts standard

design standards GB/T2238-1989
Flange connection size GB/T9113.1-2000 ;GB /T9115.1-2000; JB78
Structure length GB/T12221-1989
pressure test GB/T13927-1992 ; JB /T9092-1999

 Technical parameters of pneumatic fluorine -lined wafer butterfly valve

DN( mm) 50～1600
PN(MPa) 0.6 1.0 1.6
Sealing test (MPa) 0.66 1.1 1.76
Strength test (MPa) 0.9 1.5 2.4
proper temperature Fluorine rubber: -20℃～200℃
Applicable media Water, air, natural gas, oil and weak corrosive fluids
leak rate Comply with GB/T13927-92 standard
drive mode pneumatic
Configure the actuator GT, AT, AW series single and double acting pneumatic actuators
way to control Switch two-position control, 4～20mA analog signal control

 Main parts and materials of pneumatic fluorine -lined wafer butterfly valve

Part Name Material
valve body Ductile cast steel, cast steel, alloy steel, stainless steel
Butterfly Grey cast iron, nodular cast steel, cast steel, stainless steel and special materials
sealing ring All kinds of rubber, PTFE
stem 2Cr13, stainless steel
filler O-ring, flexible graphite

Main dimensions of pneumatic fluorine -lined wafer butterfly valve

Nominal diameter DN L D1 D z -φd H H0 A B
50 43 125 165 4-18 63 315 180 65
65 46 145 185 4-18 70 330 180 65
80 46 160 200 8-18 83 390 245 72
100 52 180 220 8-18 105 431 245 72
125 56 210 250 8-18 115 455 245 72
150 56 240 285 8-22 137 620 355 93
200 6 295 340 8-22 164 720 350 93
250 68 350 395 12-22 206 800 550 350
300 78 400 445 12-22 230 860 600 350
350 78 460 505 16-22 248 883 600 350
400 102 515 565 16-26 289 972 600 350
450 114 565 615 20-26 320 1043 750 380
500 127 620 670 20-26 343 1098 750 380
600 154 725 780 20-30 413 1236 750 380
700 165 840 895 24-30 478 1431 750 380
800 190 950 1015 24-33 525 1488 750 380

 

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