Pneumatic fluorine lined butterfly valve

Pneumatic fluorine lined butterfly valve

Product model: D671X
Nominal diameter: DN50~1200mm
Pressure range: PN0.6MPa~1.6MPa
Operating temperature: 80℃~120℃
Applicable media: water, sewage, gas
Valve material: cast steel, stainless steel
Structure length: GB/T12221-1989
Connection standard: GB/T12238-1989
Pressure test: GB/T13927-1992

Product overview

The center line butterfly valve is mainly composed of the center line soft seal butterfly valve and the pneumatic actuator. The flow channels of butterfly valves are all lined with elastic rubber, and the plates are made of stainless steel. The contact surface between the plates and the seals is finely ground to ensure smoothness. When the butterfly valve is closed or opened, the disc is close to the elastic rubber without a gap, and has a reliable sealing property. Especially suitable for water, sewage, gas, gas and other media pipelines. The valve uses compressed air as the power to accept (4~20mA) industrial signals through the actuator to push the valve stem to drive the disc rotation (0-90°) to complete the valve opening and adjustment. It is widely used in water plants, power plants, steel mills, papermaking, chemical industry, diet and other systems for water supply and drainage, as regulation and cut-off use.



Structural characteristics
1, small and light, easy to disassemble and repair, and can be installed in any position.
2, simple structure, compact, small operating torque, 90° rotation open quickly.
3, the flow characteristic is straight line, good adjustment performance.
4, the connection between the butterfly plate and the valve stem adopts a pin-free structure to overcome the possible internal leakage point.
5, the outer circle of the butterfly plate adopts spherical shape, which improves the sealing performance and extends the service life of the valve, and maintains zero leakage with pressure opening and closing more than 50,000 times.






Main contour connection dimensions

  • Nominal diameter
Structural length
(Standard value)
Overall dimensions (reference value Connection size (standard value)
0.6MPa 1.0 MPa 1.6 MPa
mm inch L H Ho A B D0 n-d D0 n-d D0 n-d
50 2 43 63 315 180 65 110 4-14 125 4-18 125 4-18
65 2-1/2 46 70 330 180 65 130 4-14 146 4-18 145 4-18
80 3 46 83 390 245 72 150 4-18 160 8-18 160 8-18
100 4 52 105 431 240 72 170 4-18 180 8-18 180 8-18
125 5 56 115 455 240 72 200 8-18 210 8-18 210 8-18
150 6 56 137 626 350 93 225 8-18 240 8-22 240 8-22
200 8 60 164 720 350 93 280 8-18 295 8-22 295 12-22
250 10 68 206 800 550 350 335 12-18 350 12-22 355 12-26
300 12 78 230 860 600 350 395 12-22 400 12-22 410 12-26
350 14 78 248 883 600 350 445 12-22 460 16-22 470 16-26
400 16 102 289 972 600 350 495 16-22 515 16-26 525 16-30
450 18 114 320 1043 750 380 550 16-22 565 20-26 585 20-30
500 20 127 343 1098 750 380 600 20-22 620 20-26 650 20-33
600 24 154 413 1236 750 380 705 20-26 725 20-30 770 20-36
700 28 165 478 1431 750 380 810 24-26 840 24-30 840 24-36
800 32 190 525 1488 750 380 920 24-30 950 24-33 950 24-39
900 36 203 620 1615 1250 380 1020 24-30 1050 28-33 1050 28-39
1000 40 216 725 1765 1500 580 1120 28-30 1160 28-36 1170 28-42
1200 48 254 780 1976 1500 580 1340 32-33 1380 32-39 1390 32-48