Pneumatic high performance butterfly valve
Release time:2023-8-11




Structural features

Triple eccentric, double eccentric structure, effectively reduce the friction between the sealing pair of butterfly valve, greatly improve the service life of the valve;The butterfly valve adopts "J" type RPTFE valve seat after development and improvement. It has good elasticity and long service life, and can automatically compensate the change of temperature and pressure, as well as the sealing compensation of wear and tear due to long-term use of the switch.At the same time, under the action of the medium force, always maintain reliable sealing performance;Ultra-low friction coefficient self-lubricating shaft sleeve, reduce the friction between the stem and sleeve, so that the butterfly valve more easily open and close;The "tangential pin" connection between the valve stem and butterfly plate effectively increases the strength of the valve stem and reliability of the connection between the valve stem and butterfly plate;Special floating valve seat design, according to the direction of the pressure source, automatically adjust the seat position, so that the valve in the full close position has the ideal sealing specific pressure, achieve the valve double-side pressure, and extend the service life of the valve seat, increase the possibility of the valve service life up to a million times;It has a flight-proof structure to ensure that the stem does not fall out of the valve due to the failure of the connection between the stem and the disc;ISO5211 top flange design can be connected with various electric, pneumatic, manual and other intelligent driving devices;ANSI/FCI70-2 specifies leak levels and test procedures for control valves;High performance butterfly valve can achieve the bubble free seal as stipulated in MSS-SP61, that is, higher than class VI;Easy maintenance, manufacturing process optimization, increase the replacement of parts;Damage to valve shaft and disc can be replaced directly on the spot. Comprehensive maintenance can be carried out only with general manual tools.The whole series of high performance butterfly valves can provide customers with different materials according to their different working conditions.


Executive Standards

Design and manufacturing: GB/T12238, API609, EN593, etc
API609, EN558, ISO5752, etc
Connecting flange: GB/T9113, DIN1092-1. ASME B16.5 ᵣ and etc
Inspection test: GB/T13927, API598, EN12266.1, etc


Performance parameter

Nominal diameter: DN50 ~ 600mm NPs 2 "~ 24"
Nominal pressure: PN2.5 ~ 40 Class 150 ~ 300lb
Applicable temperature: 150 ℃
Connection mode: clamp type, lug type, flange type, etc
Driving mode: handle, worm gear drive, electric, pneumatic, etc
Main materials: carbon steel, austenitic stainless steel, duplex stainless steel, copper alloy, titanium alloy and various special materials


Product size


DN 150Lb
In mm L L1 L2 L3 D D1 D2 C H N-d
3 80 114 48 180 48 190 152.4 127 24.3 310 4-19
4 100 127 54 190 54 230 190.5 157 24.3 325 8-19
5 125 140 56 200 56 255 215.9 186 24.3 360 8-22
6 150 140 57 210 57 280 241.3 216 26.9 395 8-22
8 200 152 64 230 64 345 298.5 270 29 480 8-22
10 250 165 71 250 71 405 362.0 324 30.6 550 12-26
12 300 178 81 270 81 485 431.8 381 32.2 610 12-26
14 350 190 92 290 92 535 476.3 413 35.4 710 12-29
16 400 216 102 310 102 595 539.8 470 37 755 16-29
18 450 222 114 330 114 635 577.9 533 40.1 835 16-32
20 500 229 127 350 127 700 635.0 584 43.3 900 20-32
24 600 267 154 390 154 815 749.3 692 48.1 1060 20-35
28 700 292 165 430 165 925 863.6 800 71.9 1170 28-35
32 800 318 190 470 190 1060 977.9 914 81.4 1320 28-41
36 900 330 203 510 203 1170 1085.8 1022 90.9 1440 32-41
40 1000 410 216 550 216 1290 1200.2 1124 90.9 1640 36-41
48 1200 470 254 630 254 1510 1422.4 1359 108.4 1850 44-41
56 1400 530 390 710 390 1745 1651.0 1575 124.3 2040 48-48



DN 300Lb
In mm L L1 L2 L3 D D1 D2 C H N-d
3 80 180 48 180 48 210 168.3 127 29 310 8-22
4 100 190 54 190 54 255 200.0 157 32.2 325 8-22
5 125 200 56 200 56 280 235.0 186 35.4 360 8-22
6 150 210 59 210 59 320 269.9 216 37 430 12-22
8 200 230 73 230 73 380 330.2 270 41.7 535 12-26
10 250 250 83 250 83 445 387.4 324 48.1 695 16-29
12 300 270 92 270 92 520 450.8 381 51.3 805 16-32
14 350 290 117 290 117 585 514.4 413 54.4 880 20-32
16 400 310 133 310 133 650 571.5 470 57.6 930 20-35
18 450 330 149 330 149 710 628.6 533 60.8 990 24-35
20 500 350 159 350 159 775 685.8 584 64 1050 24-35
24 600 390 181 390 181 915 812.8 692 70.3 1230 24-41



DN 600Lb
In mm L L1 L2 L3 D D1 D2 C H N-d
6 150 210 78 210 78 355 292.1 216 54.7 425 12-29
8 200 230 102 230 102 420 349.2 270 62.6 640 12-32
10 250 250 117 250 117 510 431.8 324 70.5 745 16-35
12 300 270 140 270 140 560 489 381 73.7 820 20-35
14 350 290 155 290 155 605 527 413 76.9 935 20-38
16 400 310 178 310 178 685 603.2 470 83.2 975 20-41
18 450 330 200 330 200 745 654 533 89.6 1110 20-45
20 500 350 216 350 216 815 723.9 584 95.9 1215 24-45
24 600 390 232 390 232 940 838.2 692 108.6 1300 24-51



DN 900Lb
In mm L L1 L2 L3 D D1 D2 C H N-d
6 150 225 104 225 104 380 317.5 216 62.6 525 12-32
8 200 275 112 275 112 470 393.7 270 70.5 660 12-38
10 250 325 135 325 135 545 469.9 324 76.9 735 16-39
12 300 375 170 375 170 610 533.4 381 86.4 820 20-39
14 350 425 173 425 173 640 558.8 413 92.8 870 20-41
16 400 475 210 475 210 705 616 470 95.9 965 20-45
18 450 500 228 500 228 785 685.8 533 108.6 1050 20-51
20 500 575 250 575 250 855 749.3 584 115 1175 20-54
24 600 675 275 675 275 1040 901.7 692 146.7 1330 20-67



DN 1500Lb
In mm L L1 L2 L3 D D1 D2 C H N-d
6 150 350 160 350 160 395 317.5 216 89.6 550 12-38
8 200 400 180 400 180 485 393.7 270 99.1 690 12-45
10 250 450 200 450 200 585 482.6 324 115 780 12-50
12 300 500 230 500 230 675 571.5 381 130.9 905 16-54
14 350 550 250 550 250 750 635 413 140.4 990 16-60
16 400 600 265 600 265 825 704.8 470 153.1 1085 16-67
18 450 650 300 650 300 915 774.7 533 169 1180 16-73
20 500 700 340 700 340 985 831.8 584 184.8 1290 16-80
24 600 800 400 800 400 1170 990.6 692 210.2 1450 16-92



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