Double flange butterfly valve

Double flange butterfly valve

Double flange butterfly valve

Item Number:

Double flange butterfly valve is a type of valve that regulates flow through a pipeline. It has two flanges that connect to the pipe on either side of the valve. The valve is operated by a disc that rotates around a central axis to control fluid flow. It is commonly used in industrial applications such as water and wastewater treatment, chemical processing, and HVAC systems. It is known for its high flow capacity, low pressure drop, and easy maintenance. Double flange butterfly valves are available in various sizes and materials to fit different applications.

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Material of main parts
Part Name Material
Body Cast Iron,Ductile Iron,WCB,Stainless Steel,Bronze
Seat NBR,EPDM,VITON,PTFE
Disc Ductile Iron,WCB,304 CF8,316 CF8M,AI-bronze C958
Stem SS416,SS304,SS316
End Connection Flange
Operate Manual,Worm gear,Pneumatic,Electric-Motorized
Disc Type

With-pin,One stem no-pin,Double stem no-pin

 

Valve Design
Technical Specification
Valve Design GB/T12238,API609,MSS SP-67
Face to Face GB/T12221,API609,MSS SP-67,DIN3202,BS EN558-1
Pressure Test GB/T13927,API598
Flange Drilling GB/T17241.6,ASI B16.1 Class125,BS4504 PN10/PN16 DIN2501 PN10/PN16
Top Flange It can be customized to 5211 standard

 

Main external and connecting dimensions(mm)


 

DN NPS φD φD1 φD2 N x U L H K E φG C n x φd &
PN10 PN16 150LB PN10 PN16 150LB PN10 PN16 150LB PN10 PN16 150LB
40 1 1/2 150 150 125 110 110 98.4 84 84 13 4 x φ19 4 x φ19 4 x φ16 106 28 77 57 12.6 3 4 x φ7 90°
50 2 165 165 150 125 125 120.7 99 99 92.1 4 x φ19 4 x φ19 4 x φ19 108 28 77 57 12.6 3 4 x φ7 90°
65 2 1/2 185 185 180 145 145 139.7 118 118 104.8 4 x φ19 4 x φ19 4 x φ19 112 28 77 57 12.6 3 4 x φ7 90°
80 3 200 200 190 160 160 152.4 132 132 127 8 x φ19 8 x φ19 4 x φ19 114 28 77 57 12.6 3 4 x φ7 90°
100 4 220 220 230 180 180 190.5 156 156 157.2 8 x φ19 8 x φ19 8 x φ19 127 32 92 70 15.77 5 4 x φ10 90°
125 5 250 250 255 210 210 215.9 184 184 185.7 8 x φ19 8 x φ19 8)x φ22 140 32 92 70 18.92 5 4 x φ10 90°
150 6 285 285 280 240 240 241.3 211 211 215.9 8 x φ23 8 x φ23 8 x φ22 140 32 92 70 18.92 5 4 x φ10 90°
200 8 340 340 345 295 295 298.5 266 266 269.9 8 x φ23 12 x φ23 8 x φ22 152 42 115 89 22.1 5 4 x φ14 90°
250 10 395 405 405 350 355 362 319 319 323.8 12 x φ23 12 x φ28 12 x φ26 165 45 115 89 28.45 8 4 x φ14 90°
300 12 445 460 485 400 410 431.8 370 370 381 12 x φ23 12 x φ28 1) x φ26 178 45 140 108 31.6 8 4 x φ14 90°
350 14 505 520 535 460 470 476.3 429 429 412.8 16 x φ23 16 x φ28 12 x φ29 190 45 140 108 31.6 8 4 x φ14 90°
400 16 565 580 595 515 525 539.8 480 480 469.9 16 x φ28 1) x φ31 16 x φ29 216 55 197 159 33.15 10 4 x φ20 90°
450 18 615 640 635 565 585 577.9 530 548 533.4 20 x φ28 20 x φ31 16 x φ32 222 55 197 159 37.95 10 4 x φ20 90°
500 20 670 715 700 620 650 635 582 609 584.2 20 x φ28 20 x φ34 20 x φ32 229 55 197 159 41.15 10 4 x φ20 90°
550 22 730 775 750 675 710 692.1 633 666 637.1 20 x φ31 20 x φ34 20 x φ35 267 55 197 159 41.15 10 4 x φ20 90°
600 24 780 840 815 725 770 749.3 682 720 692.2 20 x φ31 20 x φ37 20 x φ35 267 70 276 216 50.65 16 4 x φ22 90°
650 26 835 860 870 780 790 806.4 736 743 749 24 x φ31 24 x φ37 24 x φ35 292 70 276 216 50.65 16 4 x φ22 90°
700 28 895 910 925 840 840 863.6 794 794 800 24 x φ31 24 x φ37 28 x φ35 292 80 300 254 63.35 2 x 18 8 x φ18 90°
750 30 965 970 985 900 900 914.4 854 854 857 24 x φ34 24 x φ37 28 x φ35 308 80 300 254 63.35 2 x 18 8 x φ18 90°
800 32 1015 1025 1060 950 950 977.9 901 901 914 24 x φ34 24 x φ40 28 x φ42 318 80 300 254 63.35 2 x 18 8 x φ18 90°
900 36 1115 1125 1170 1050 1050 1085.8 1001 1001 1022 28 x φ34 28 x φ40 32 x φ42 330 110 300 254 75 2 x 20 8 x φ18 22.5°
1000 40 1230 1255 1290 1160 1160 1200.2 1112 1112 1124 28 x φ37 28 x φ43 36 x φ42 410 110 300 254 85 2 x 22 8 x φ18 22.5°
1100 44 1340 1355 1405 1270 1270 1314.4 1215 1215 1245 32 x φ37 32 x φ43 40 x φ42 450 120 300 254 95 2 x 25 8 x φ18 22.5°
1200 48 1455 1485 1510 1380 1380 1422.4 1328 1328 1359 32 x φ40 32 x φ49 44 x φ42 470 150 350 298 105 2 x 28 8 x φ22 22.5°

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