BUTTERFLY VALVE

BU-1601C(EN)
ABOUT US
FBV Inc. is an ISO 9001 certified company specializing in manufacturing industrial valves
including ball valves, gate valves, globe valves, check valves, plug valves and butterfly valves in
carbon steel, stainless steel, duplex stainless and alloy materials. Our products conform to the
latest industry standards in accordance to ANSI, ASME and API.

FBV today has over 600,000 square feet of manufacturing facilities. Through its conviction to
provide only the finest quality products and services to match the need of our customers, FBV
has now established itself as a serious player in the valve business.

FBV INC has sold worldwide in North America, Europe, South America, South Asia, Africa and
the Middle East. We consider product quality and customer satisfaction as our highest priority.
We look forward to new customer relationships by providing value, quality, customer service,
honesty, integrity and the commitment to maintain product consistency with each and every
order.

MISSION STATEMENT
We at FBV, Inc. commit to taking ACTION:
 Adopt the latest technology to take the product quality to the next level;
 Consistently provide on-time services to our customers;
 Train and develop talented people with strong work ethics to deliver effective
performance;
 Improve and enhance engineering designs to ensure product performance;
 Optimize management systems and increase productivity;
 Never forget our customer and employee needs.
 BUTTERFLY VALVE

TABLE OF INDEX PAGE

Introduction, Features 3

Scope of Products, 4

Overview Triple Offset Type 5-6

Dimensions and Weights 7

Class 150 (PN 20) 7-8

Class 300 (PN 50) 9

Class 600 (PN 100) 10

Class 900 /1500(PN 150/250) 10-11

Flow-Coefficient CV Value (Triple Offset Type) 12

Overview Concentric Lining Type 13

Dimensions and Weights 14

Class 150 (PN 20) 14

Flow-Coefficient CV Value(Concentric Lining Type) 15

Seat and Seal Material, Selection Guide 16

Valve Figure Number, How To Order 17-18

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 BUTTERFLY VALVE

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 BUTTERFLY VALVE

INTRODUCTION FEATURES

INTRODUCTION

Butterfly valve uses a stem through an approximate

circular plate of the disc and the valve stem rotation to
drive the rotation of the disc, in order to control the
effect of fluid switch.

FBV produces triple offset metal sealing and concentric

Lining butterfly valve.

Concentric Lining Butterfly Valve

Concentric Lining butterfly valve adopts lining on all the

parts that contact with medium inside of body, the
stainless steel which is resistance of corrosion is used as
stem and disc to ensure the corrosion resistance of
different strong corrosive medium.

The valve body and disc materials can be made of cast

iron, carbon steel or stainless steel to ensure the
bearing strength. Many kinds of soft sealing material
such as NBR, EPDM or PTFE etc can be used as lining
Offset Metal Sealing Butterfly Valve material to adapt to different corrosive medium or
working temperature.
FBV Offset metal sealing butterfly valve uses the three
eccentric structure with multi-layer metal seal or pure
metal sealing ring, different sealing materials are being
used according to the different temperature request
from end user.

The structure of valve sealing ring that was formed

after machining for triple eccentric butterfly valve is
oblique cone type, the purpose of which is to let the
disc open in a subtle angle and seat sealing surface can
be completely separated from the sealing surface of
disc, thus to reduce the friction of sealing surface
during the open and close.

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 BUTTERFLY VALVE

SCOPE OF PRODUCTS
Legends: A –Triple Offset & Concentric Lining Type C–Available in Concentric Lining Type Only
B–Available in Triple Offset Only D– Not Usually Required
Size Class 150 Class 300 Class 600 Class 900 Class 1500
in/mm PN 20 PN 50 PN 100 PN 150 PN 250
2
A B B B B
50
3
A B B B B
65
4 A B B B B
80
5 A,D B,D B,D B,D B,D
100
6
A B B B B
150
8
A B B B B
200
10
A B B B B
250
12
A B B B B
300
14 A B B B B
350
16 A B B B B
400
18
A B B B B
450
20
A B B B B
500
22
A,D B,D B,D B,D B,D
550
24
A B B B B
600
26 A B B B B
650
28 A,D B,D B,D B,D B,D
700
30
A B B B B
750
32
A,D B,D B,D B,D B,D
800
34
A,D B,D B,D B,D B,D
850
36
A B B B B
900
38 A,D B,D B,D B,D
950
40 A B B B
1000
42
A B B B
1050
48
A B B B
1200
56
A B B B
1400
60
A B B B
1500

1. Concentric Lining Butterfly valve is applicable to the pressure rating not higher than class 150, but not limit to CL150.
CL125, CL75, PN10 and PN16 can be an option.

2. Above are the dimensions that normally used, contact our sales representative if any other sizes are requested.

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 BUTTERFLY VALVE

OVERVIEW (Triple Offset Type)

Part List STANDARDS

1 Cover Design & Manufacture API 609,ASME b16.34
2 Segment
13 Face-to-face API 609, ASME B16.10
3 Body
12 End Dimension ASME B16.5 (RF, RTJ),
4 Stem
Seal Ring
ASME B16.47 (RF,RTJ)
5
MSS SP-44 (NPS 22 Only)
9 10 11 6 Disc
ASME B16.25 (BW)
7 Plate
8 Packing Test & inspection API 598
8
9 Stud
TYPICAL MATERIALS
10 Nut
Body, Disc A216 WCB,A217 WC6, WC9,
11 Washer A351 CF3, CF8, CF3M, CF8M,
7
12 Yoke A995 4A, 5A, A352 LCB, LCC, LC2,
3 Gear
13 Monel, Inconel, Hastelloy (Casting)
6

5 Seat 13Cr/SS304/SS316+Composite materials, PTFE

4 Stem A276 410, 304, 316, F51,
AISI 4140+ENP, 17-4PH
3
Packing Graphite, PTFE
2
1 O-ring NBR, HNBR,FKM

Typical Triple Offset Butterfly Valve

Wafer Type Lug Type Flange Type Butt Welding Type

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 BUTTERFLY VALVE

OVERVIEW (Triple Offset Type)

Offset 1: Offset for seat seal and the

rotation center of stem.

Offset 2: Center of pipe and disc.

Offset 3: Seat sealing angle center line

and flow passage center.

The triple offset of butterfly valve

ensures the valve disc is completely
separated from seat sealing surface
while open in a slightly angle which
could reduce the friction of sealing
surface during open and close and
opening torque as well as prolong the
service life of the sealing surface.

FBV metal sealing butterfly valve adopts multi-layer sealing

ring to achieve the valve seal, the multi-layer seal ring is
generally made of stainless steel and graphite combination

The pure metal sealing can be used for special medium or

high temperature.

Disc Slightly open

Disc closed: Pure metal seat ring Disc closed: Multi-layer metal seat ring

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 BUTTERFLY VALVE

DIMENSIONS AND WEIGHTS (Triple Offset Type) ASME CLASS 150 (PN 20)

ASME CLASS 150 (PN 20)

Size L Weight (lb/kg)
D A B B1
in/mm WAFER /LUG RF(1) BW WAFER LUG RF BW
2 2 1.69 4.25 4.33 7.87 13.78 18 22 31
-
50 50 43 108 110 200 350 8 10 14
2½ 2½ 1.81 4.41 4.92 8.46 14.37 20 24 35
-
65 65 46 112 125 215 365 9 11 16
3 3 1.89 4.5 7.09 5.12 8.86 14.76 22 26 40 33
80 80 48 114 180 130 225 375 10 12 18 15
4 4 2.13 5 7.48 5.71 9.45 15.35 26 40 51 44
100 100 54 127 190 145 240 390 12 18 23 20
6 6 2.24 5.51 8.27 6.89 11.42 17.32 33 53 70 55
150 150 57 140 210 175 290 440 15 24 32 25
8 8 2.52 5.98 9.06 9.65 13.39 19.29 66 99 106 108
200 200 64 152 230 245 340 490 30 45 48 49
10 10 2.8 6.5 9.84 11.02 14.76 20.67 104 150 194 156
250 250 71 165 250 280 375 525 47 68 88 71
12 12 3.19 7 10.63 12.4 16.73 22.64 174 220 282 229
300 300 81 178 270 315 425 575 79 100 128 104
14 14 3.62 7.48 11.42 13.78 17.91 24.41 185 267 348 317
350 350 92 190 290 350 455 620 84 121 158 144
16 16 4.02 8.5 12.2 14.96 19.5 27.56 308 385 491 396
400 400 102 216 310 380 495 700 140 175 223 180
18 18 4.5 8.74 13 15.55 20.08 29.13 412 500 630 511
450 450 114 222 330 395 510 740 187 227 286 232
20 20 5 9.02 13.78 17.13 22.05 32.09 500 577 744 599
500 500 127 229 350 435 560 815 227 262 338 272
24 24 6.06 10.51 15.35 19.5 25 34.06 782 782 1126 914
600 600 154 267 390 495 635 865 355 355 511 415
28 28 6.5 11.5 16.93 19.69 25.59 35.83 1156 1156 742 1333
700 700 165 292 430 500 650 910 525 525 337 605
32 32 7.48 12.52 18.5 21.65 28.15 39.57 1542 1718 2562 1586
800 800 190 318 470 550 715 1005 700 780 1163 720
36 36 8 13 20.08 24.8 32.09 42.70 2379 2313 3450 2048
900 900 203 330 510 630 815 1110 1080 1050 1566 930
40 40 8.5 16.14 21.65 26.77 34.65 47.24 2907 3458 4692 3678
1000 1000 216 410 550 680 880 1200 1320 1570 2130 1670
48 48 10 18.5 24.8 31.3 39.17 52.56 4515 5066 7180 5727
1200 1200 254 470 630 795 995 1335 2050 2300 3260 2600
56 56 15.35 20.87 35.43 45.47 74.41 6825 7269 10352 8370
-
1400 1400 390 530 900 1155 1890 3100 3300 4700 3800
1.The dimension and weights are for reference only and subject to change without notice.
2. For more size or dimensional information, please contact our sales representative.

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 BUTTERFLY VALVE

DIMENSIONS AND WEIGHTS (Triple Offset Type) ASME CLASS 150 (PN 20)

ASME CLASS 150 (PN 20) Continue

Size L Weight (lb/kg)

D A B B1
in/mm WAFER /LUG RF(1) BW WAFER LUG RF BW
60 60 15.35 20.87 20.87 36.61 46.46 75.6 9251 7489 10573 8590
1500 1500 390 530 530 930 1180 1920 4200 3400 4800 3900
72 72 28.14 22.64 22.64 39.37 51.18 85.83 12555 11894 14317 11233
1800 1800 432 575 575 1000 1300 2180 5700 5400 6500 5100
76 76 15.95 24 24 45.67 52.36 92.52 14537 14978 18282 15859
1900 1900 456 610 610 1160 1330 2350 6600 6800 8300 7200
80 80 20.08 26.38 26.38 51.18 55.12 98.43 15859 16960 19383 16520
2000 2000 510 670 670 1300 1400 2500 7200 7700 8800 7500

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 BUTTERFLY VALVE

DIMENSIONS AND WEIGHTS (Triple Offset Type) ASME CLASS 300 (PN 50)

ASME CLASS 300 (PN 50)

Size L Weight (lb/kg)
D A B B1
in/mm WAFER/ LUG RF(1) BW WAFER LUG RF BW
2 2 1.69 5.91 4.53 7.87 13.98 26 29 31
-
50 50 43 150 115 200 355 12 13 14
2½ 2½ 1.81 6.69 4.92 9.84 14.57 29 31 37
-
65 65 46 170 125 250 370 13 14 17
3 3 1.89 7.09 7.09 5.31 9.06 14.96 31 35 44 37
80 80 48 180 180 135 230 380 14 16 20 17
4 4 2.13 7.48 7.48 6.1 10.04 15.75 44 51 66 55
100 100 54 190 190 155 255 400 20 23 30 25
6 6 2.32 8.27 8.27 8.46 13 18.11 93 99 128 110
150 150 59 210 210 215 330 460 42 45 58 50
8 8 2.87 9.06 9.06 9.84 14.57 19.69 132 145 181 156
200 200 73 230 230 250 370 500 60 66 82 71
10 10 3.27 9.84 9.84 11.42 16.73 21.26 242 264 322 286
250 250 83 250 250 290 425 540 110 120 146 130
12 12 3.62 10.63 10.63 12.8 17.91 23.23 300 326 577 352
300 300 92 270 270 325 455 590 136 148 262 160
14 14 4.61 11.42 11.42 14.17 19.69 25.20 427 467 771 502
350 350 117 290 290 360 500 640 194 212 350 228
16 16 5.24 12.20 12.2 14.37 21.26 28.35 581 630 907 678
400 400 133 310 310 365 540 720 264 286 412 308
18 18 5.87 13 13 15.55 20.08 29.13 617 722 1222 789
450 450 149 330 330 395 510 740 280 328 555 358
20 20 6.26 13.78 13.78 18.5 25.59 22.86 914 991 1674 1068
500 500 159 350 350 470 650 860 415 450 760 485
24 24 7.13 15.35 15.35 21.46 28.94 35.43 1198 1317 2610 1346
600 600 181 390 390 545 735 900 544 598 1185 652
28 28 9.02 16.93 16.93 21.65 30.71 35.83 1861 2037 3282 2236
700 700 229 430 430 550 780 910 845 925 1490 1015
32 32 9.5 18.5 18.5 24.8 33.66 41.34 2621 2885 3678 3150
800 800 241 470 470 630 855 1050 1190 1310 1670 1430
36 36 9.5 20.08 20.08 26.97 35.83 45.28 3797 4137 5154 4471
900 900 241 510 510 685 910 1150 1724 1878 2340 2030
40 40 11.81 21.65 21.65 30.71 39.37 49.61 5339 5790 7137 6238
1000 1000 300 550 550 780 1000 1260 2424 2628 3240 2832
48 48 14.17 24.8 21.8 34.45 44.88 55.12 6436 7070 8998 7700
1200 1200 360 630 630 875 1140 1400 2922 3210 4085 3496
1. The dimension and weights are for reference only and subject to change without notice.
2. For more size or dimensional information, please contact our sales representative.

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 BUTTERFLY VALVE

DIMENSIONS AND WEIGHTS (Triple Offset Type) ASME CLASS 600/900 (PN 100/150)

ASME CLASS 600 (PN 100)

Size L Weight (lb/kg)
D A B B1
in/mm WAFER / LUG RF BW WAFER LUG RF BW
6 6 3.07 8.27 8.27 9.84 13.98 21.46 163 178 229 196
150 150 78 210 210 250 355 545 74 81 104 89
8 8 4.02 9.06 9.06 11.42 16.14 24.41 295 383 405 350
200 200 102 230 230 290 410 620 134 174 184 159
10 10 4.49 9.84 9.84 13.19 17.91 26.38 478 524 661 568
250 250 114 250 250 335 455 670 217 238 300 258
12 12 5.51 10.63 10.63 14.96 20.87 29.92 645 705 870 762
300 300 140 270 270 380 530 760 293 320 395 346
14 14 6.10 11.42 11.42 15.35 21.65 30.32 722 793 1007 866
350 350 155 290 290 390 550 770 328 360 457 393
16 16 7.01 12.20 12.20 17.52 24.61 35.04 1046 1145 1443 1244
400 400 178 310 310 445 625 890 475 520 655 565
18 18 7.87 13 13 18.7 26.18 38.19 1247 1374 1756 1502
450 450 200 330 330 475 665 970 566 624 797 682
20 20 8.5 13.78 13.78 20.47 28.15 39.76 1297 1963 2454 2126
500 500 216 350 350 520 715 1010 816 891 1114 965
24 24 9.13 15.35 15.35 23.03 32.09 45.28 2529 2780 3524 3029
600 600 232 390 390 585 815 1150 1148 1262 1600 1375
ASME CLASS 900 (PN 150)
Size L Weight(lb/kg)
D A B B1
in/mm WAFER / UG RF BW WAFER LUG RF BW
6 6 4.02 10.51 10.51 10.63 15.75 25.98 196 269 341 264
150 150 102 267 267 270 400 660 89 122 155 120
8 8 5.51 11.5 11.5 12.4 19.69 29.53 414 449 555 485
200 200 140 292 292 315 500 750 188 204 252 220
10 10 6.1 13 13 14.37 19.88 31.5 513 566 720 617
250 250 155 330 330 365 505 800 233 257 327 280
12 12 7 14.02 14.02 15.75 22.83 35.83 740 815 1035 888
300 300 178 356 356 400 580 910 336 370 470 403
14 14 11.42 15 15 16.54 23.62 36.61 978 1064 1328 1101
350 350 290 381 381 420 600 930 444 483 603 500
16 16 12.2 15.98 15.98 17.91 27.17 38.98 1134 1222 1553 1300
400 400 310 406 406 455 630 990 515 555 705 590
18 18 13 17 17 19.88 27.17 41.93 1753 1910 2379 2048
450 450 330 432 432 505 690 1065 796 867 1080 930
20 20 13.78 18 18 21.06 28.74 42.5 2220 2416 3007 2599
500 500 350 457 457 535 730 1105 1008 1097 1365 1180
24 24 13.78 20 20 24.41 33.07 48.03 3916 4295 5425 4626
600 600 350 508 508 620 840 1220 1778 1950 2463 2100
The dimension and weights are for reference only and subject to change without notice.

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 BUTTERFLY VALVE

DIMENSIONS AND WEIGHTS (Triple Offset Type) ASME CLASS 1500 (PN 250)

ASME CLASS 1500 (PN 250)

Size L Weight (lb/kg)
D A B B1
in/mm WAFER / UG RF BW WAFER LUG RF BW
8 8 8.27 12.2 12.2 13.78 14.17 22.05 520 427 654 507
200 200 210 310 310 350 360 560 236 194 297 230
10 10 9.06 14.57 14.57 15.75 18.5 26.38 835 683 1066 881
250 250 230 370 370 400 470 670 379 310 484 400
12 12 10.63 16.14 16.14 17.72 20.47 30.71 1273 1040 1626 1344
300 300 270 410 410 450 520 780 578 472 738 610
14 14 11.42 17.72 17.72 18.9 24.41 32.68 1579 1267 2048 1498
350 350 290 450 450 480 620 830 717 575 930 680
16 16 13 19.3 19.3 21.26 27.56 36.22 2500 1993 3249 2599
400 400 330 490 490 540 700 920 1135 905 1475 1180
18 18 23.78 20.87 20.87 22.83 28.35 38.19 3011 2445 3859 3194
450 450 350 530 530 580 720 970 1367 1110 1752 1450
20 20 14.57 22.44 22.44 24 31.5 41.34 4163 5650 5242 4515
500 500 370 570 570 610 800 1050 1890 2565 2380 2050
24 24 16.14 25.6 25.6 27.56 49.21 63 6108 6108 7659 6806
600 600 410 650 650 700 1250 1600 2773 2723 3477 3090

The dimension and weights are for reference only and subject to change without notice.

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 BUTTERFLY VALVE

FLOW COEFFICIENT CV VALUE Triple Offset Type

Class 150 (PN 20) Class 300 (PN 50)

Size Disc Opening Angle Size Disc Opening Angle
In In
mm 10° 20° 30° 40° 50° 60° 70° 80° 90° mm 10° 20° 30° 40° 50° 60° 70° 80° 90°
3 3
5 11 17 22 33 50 72 99 110 5 11 17 22 33 50 72 99 110
80 80
4 4
12 25 38 50 76 113 164 227 252 12 25 38 50 76 113 164 227 252
100 100
6 6
44 96 142 191 287 430 621 860 956 35 77 116 154 231 347 502 694 772
150 150
8 8
75 163 244 326 488 733 1058 1465 1628 68 148 222 296 444 666 962 1332 1480
200 200
10 10
124 270 405 541 811 1216 1757 2433 2703 110 238 357 476 715 1072 1548 2144 2382
250 250
12 12
249 542 813 1084 1627 2440 3524 4880 5422 164 355 533 711 1066 1600 2310 3199 3555
300 300
14 14
287 624 936 1247 1871 2807 4054 5613 6237 217 472 708 945 1417 2125 3070 4251 4723
350 350
16 16
380 826 1239 1652 2478 3717 5368 7433 8259 306 665 998 1330 1995 2993 4323 5985 6650
400 400
18 18
482 1049 1573 2097 3146 4719 6817 9438 10487 396 861 1291 1722 2582 3874 5595 7747 8608
450 450
20 20
556 1209 1814 2419 3628 5442 7860 10884 12093 486 1056 1584 2112 3168 4752 6864 9504 10560
500 500
24 24
839 1825 2737 3650 5474 8212 11861 16423 18248 775 1685 2528 3370 5055 7583 10953 15165 16850
600 600
28 28
1371 2980 4470 5960 8940 13410 19370 26820 29800 1118 2430 3645 4860 7290 10935 15795 21870 24300
700 700
30 30
1642 3570 5355 7140 10710 16065 23205 32130 35700 1426 3100 4650 6200 9300 13950 20150 27900 31000
750 750
32 32
1886 4100 6450 8200 12300 18450 26650 36900 41000 1546 3360 5040 6720 10080 15120 21840 30240 33600
800 800
36 36
2466 5360 8040 10720 16080 24120 34840 48240 53600 1969 4280 6420 8560 12840 19260 27820 38520 42800
900 900
40 40
3031 6590 9885 13180 19770 29655 42835 59310 65900 2420 5260 7890 10520 15780 23670 24190 47340 52600
1000 1000
42
3307 7190 10785 14380 21570 32355 46735 64710 71900
1050
48
4476 9730 14955 19460 21919 43785 63245 87570 97300
1200

Class 600 (PN 100) CALCULATION OF FLOW COEFFICIENT

Size Disc Opening Angle
In Flow coefficient Cv (Kv is the metric equivalent) is the rate of flow in gallon
mm 10° 20° 30° 40° 50° 60° 70° 80° 90°
per minute with the pressure drop of 1 psi across the valve. The flow
3 coefficients shown in the above table are determined with equations as
5 11 17 22 33 50 72 99 110
80 follows:
4
12 25 38 50 76 113 164 227 252
100
6
For liquids:
𝟏/𝟐
𝐐𝐥 = 𝐂𝐯 𝚫𝐏 𝐒𝐆
44 96 142 191 287 430 621 860 956
150
8 Where:
75 163 244 326 488 733 1058 1465 1628
200
10 + Ql = Flow of liquid (gallon/minute)
250
124 270 405 541 811 1216 1757 2433 2703 ΔP = Pressure drop in psi (P1-P2)
12 SG = Specific gravity (1 for liquid)
249 542 813 1084 1627 2440 3524 4880 5422
300
14
287 624 936 1247 1871 2807 4054 5613 6237
350 For gases (non-critical):
𝟏/𝟐
16
400
380 826 1239 1652 2478 3717 5368 7433 8259 𝐐𝐠 = 𝟔𝟏 ∙ 𝐂𝐯 𝐏𝟐 ∙ 𝐏𝟏 ∕ 𝐒𝐆
18 Where:
482 1049 1573 2097 3146 4719 6817 9438 10487
450 Qg = Flow of gases (SFH at STP)
20 P2 = Outlet pressure (psi)
556 1209 1814 2419 3628 5442 7860 10884 12093
500 P1 = Inlet pressure (psi)
24
839 1825 2737 3650 5474 8212 11861 16423 18248 SG = Specific gravity (1 for gas)
600

12
 BUTTERFLY VALVE

OVERVIEW (Concentric Lining Type)

Part List STANDARDS

1 Body Design & Manufacture API 609,AWWA C504, ASME b16.34
2 Bushing
8 Face-to-face API 609, ASME B16.10
3 O-ring
3 End Dimension ASME B16.5 (RF)
4 Lining
Stem ASME B16.47 (RF)
5
MSS SP-44 (NPS 22 Only)
2 6 Disc
AWWA A207
7 Pin
Gear Test & inspection API 598
8

TYPICAL MATERIALS
Body Cast iron, A216 WCB,
7 A351 CF3, CF8, CF3M, CF8M,
A995 4A, 5A,Monel, Inconel, Hastelloy
Disc Cast Iron+ENP, Carbon steel +ENP,
6 A351 CF3, CF8, CF3M, CF8M,
A995 4A, 5A,Monel, Inconel, Hastelloy
5
4 Lining NBR, HNBR, EPDM,FKM, PTFE
3 Stem A276 410, 304, 316, F51,
2 AISI 4140+ENP, 17-4PH
1 Packing NBR, HNBR, PTFE
O-ring NBR, HNBR, FKM

Typical Concentric Lining Type Butterfly Valve

Wafer Type, Wafer Type, Lug Type, Double Flange Type, Mono-Flange Type
Rubber Liner PTFE Liner Rubber Liner Rubber Liner Rubber Liner

Rubber Concentric lined valve can be Bonded or Replaceable Liner.

13
 BUTTERFLY VALVE

DIMENSIONS AND WEIGHTS (Concentric Lining Type) ASME CLASS 150 (PN 20)

ASME CLASS 150 (PN 20)

Size L Weight (lb/kg)
D A B B1
in/mm WAFER / LUG RF WAFER RF
2 1.97 1.69 4.25 3.27 4.72 8.66 11.45 25
50 50 43 108 83 120 220 5.2 11.2
2½ 2.52 1.81 4.41 3.66 5.12 13 12.11 29
65 64 46 112 93 130 330 5.5 13.3
3 3 1.89 4.49 3.94 9.65 13.98 13.22 31
80 76 48 114 100 245 355 6 14.2
4 3.94 2.05 5 4.5 6.1 10.63 15.42 38
100 100 52 127 114 155 270 7 17.4
6 5.91 2.2 5.51 5.63 7.48 11.81 24.23 56
150 150 56 140 143 190 300 11 25.5
8 7.87 2.36 5.98 6.69 8.07 12.6 39.65 87
200 200 60 152 170 205 320 18 39.5
10 9.84 2.68 6.5 7.8 9.25 15.75 52.86 117
250 250 68 165 198 235 400 24 53
12 11.81 3.07 7.01 8.78 11.02 17.72 74.89 148
300 300 78 178 223 280 450 34 67
14 13.11 3.07 7.48 11.02 12.2 19.69 101.32 200
350 333 78 190 280 310 500 46 91
16 15.31 4.02 8.5 11.81 13.39 20.87 191.63 311
400 389 102 216 300 340 530 87 141
18 17.05 4.5 8.74 13.58 14.76 22.83 226.87 401
450 433 114 222 345 375 580 103 182
20 19.33 5 9.02 19.98 16.93 24.8 323.79 441
500 491 127 229 355 430 630 147 200
24 23.31 6.06 10.5 16.14 19.69 30.71 482.38 639
600 592 154 267 410 500 780 219 290
28 27.36 6.5 11.5 18.82 22.05 31.5 742.29 943
700 695 165 292 478 560 800 337 428
32 31.26 7.48 12.52 20.83 24.41 31.89 909.69 1244
800 794 190 318 529 620 810 413 565
36 34.02 7.87 13 23 26.18 33.86 1612.33 1758
900 864 200 330 584 665 860 732 798
40 38 9.88 16.14 24.5 28.94 36.22 1911.89 2026
1000 965 251 410 622 735 920 868 920
48 45.67 10.87 18.5 31.5 36.10 43.7 2246.7 3084
1200 1160 276 470 800 917 1110 1020 1400
56 54.84 15.35 20.87 36.22 48.43 59.06 4075 4405
1400 1393 390 530 920 1230 1500 1850 2000
1. The dimension and weights are for reference only and subject to change without notice.
2. The outline dimension for pressure rating PN16 is equal to dimension for class 150 as described above.
3. For more dimensional information, please contact our sales representative.

14
 BUTTERFLY VALVE

FLOW COEFFICIENT CV VALUE Concentric Lining Type

Class 150 (PN 20)

Size Disc Opening Angle
In 90°
mm 10° 20° 30° 40° 50° 60° 70° 80°
Full open
2
0.1 5 12 24 45 64 90 125 135
50
2 1/2
0.2 8 20 37 65 98 144 204 220
65
3
0.3 12 22 39 70 116 183 275 302
80
4
0.5 17 36 78 139 230 364 546 600
100
5
0.8 29 61 133 237 292 320 930 1022
125
6
2 45 95 205 366 605 958 1437 1579
150
8
3 89 188 408 727 1202 1903 2854 3136
200
10
4 151 320 694 1237 2047 3240 4859 5340
250
12
5 234 495 1072 1911 3162 5005 7507 8250
300
14
6 338 715 1549 2761 4568 7230 10844 11917
350
16
8 464 983 2130 3797 6282 9942 14913 16388
400
18
11 615 1302 2822 5028 8320 13168 19752 21705
450
20
14 971 1674 3628 6465 10698 16931 25396 27908
500
24
22 1222 2857 5605 9989 16528 26157 29236 43116
600
28
30 1633 3522 7630 12599 20036 30482 46899 58696
700
32
45 2387 4791 8736 13786 20613 31395 48117 68250
800
36
60 3021 6063 11055 17449 26086 39731 60895 86375
900
40
84 4183 8395 15307 24159 36166 55084 84425 119750
1000
48
102 4651 10365 17010 27242 43853 70431 108968 132888
1200
60
148 6400 14500 24500 39400 63200 102000 154000 190000
1500
72
190 8220 18600 31500 50700 81200 131000 198000 244000
1800

15
 BUTTERFLY VALVE

SEAT AND SEAL MATERIAL SELECTION GUIDE

Seat Material Pressure-Temperature Rating (Operating)

SEAT MATERIALS
Material Operating
Description Operating Pressure Service Application
Name Temperature
Virgin PTFE is the most widely used sealing material with excellent General chemicals, low
-112oF – 248oF Class 150
PTFE characteristics suitable for most services. It has excellent chemical resistance pressure services.
-80oC– 120oC PN 20
throughout valve industries and low coefficient of frication.
RPTFE (Reinforced PTFE) is typically produced by adding 15% fiber glass to For low and medium
virgin PTFE. It has better pressure-temperature properties than virgin PTFE, -112oF – 248oF Class 150 – 600 pressure services.
RPTFE
better resistance to wear and deformation under load. NOT to be used in -80oC– 120oC PN 20 – 100
hydrofluroic acid
PCTFE is a homopolymer of chlorotrifluoroethylene, featuring high -320oF – 248oF Class 150 – 300 For low temperature low
PCTFE
compressive strength and low deformation under load. -196oC– 120oC PN 20 – 50 pressure services.
Nylon is a common seat material for Class 600 valves. It is highly resistance For high pressure, low
-22oF – 176oF Class 150 –1500
Nylon 6 to many chemicals and abrasions, and can be used in air, oil and other gas temperature services.
-30oC– 80oC PN 20 –250
media. It is NOT suitable for strong oxidization agents.
Devlon® is a high molecular weight polyamide that is specifically tailored for For high pressure high
-50oF – 302oF Class 150 –1500
Devlon® high temperature/pressure applications in the offshore oil and gas sector. It temperature offshore
-46oC– 150oC PN 20 –250
is low moisture absorption. services.
Molon (Nylon+MoS2) is a modified Nylon, the characteristics are similar to -20oF – 266oF Class 150 – 1500 For high pressure, low
Nylon+MoS2
Devlon with it is cheaper than Devlon. -29oC– 130oC PN 20 – 250 temperature services.
PEEK is a high performance engineered thermoplastic. It is excellent in For high pressure high
-148oF – 500oF Class 150 – 2500
PEEK water/chemical resistance andit is unaffected by continuous exposure to hot temperature services.
-100oC– 260oC PN 20 – 420
water/steam
PPL (Polyparaphenylene) is an excellent seat material with low coefficient of -50oF –482oF Class 150 – 300 For high temperature low
PPL
friction, highly resistant to pressure and temperature. -46oC– 250oC PN 20 – 50 pressure services.
Delrin® (Acetal Resin) possesses high tensile strength, creep resistance and For extreme pressure
toughness. It exhibits low moisture absorption. It is chemically resistant to -50oF –194oF Class 150 – 600 services.
Delrin®
hydrocarbons, solvents and neutral chemicals.DO NOT use it on oxygen -46oC– 90oC PN 20 –100
service or steam.
TFM (modified PTFE) is a chemically modified PTFE that offers enhanced -112oF – 248oF Class 150 For services requiring high
TFM
properties while retaining all the proven advantages of a conventional PTFE. -80oC– 120oC PN 20 purity.
Metal (typically stellite) seats are used in severe conditions where flashing, Varies Varies For severe services.
Metal
hydraulic shock, abrasive media or trapped metal may exist in the line.

O-RING MATERIALS
Operating
Material Name Description Operating Pressure
Temperature
Buna-N (NBR) is an all purpose polymer with good resistance to water, solvents, oil and -50oF –176oF Class 150 – 600
NBR
hydraulic fluids. -46oC– 80oC PN 20 –100
HNBR (Hydrogenated NBR) has similar media stability to NBR but with significantly better -67oF – 337oF Class 150 – 600
HNBR
heat and oxidization stability. -55oC–170oC PN 20 – 100
Viton (fluorocarbon) is a fluorocarbon elastomer that is compatible with a broad range of
-49oF – 320oF Class 150 – 600
Viton chemicals. It performs well in mineral acids, salt solutions, chlorinated hydrocarbons and
-22oC– 204oC PN 20 – 100
petroleum oils
EPDM has good abrasion and tear resistance with excellent chemical resistance to a variety
-50oF – 302oF Class 150 – 600
EPDM of acids and alkalines. It is susceptible to attack by oil, strong acids and strong alkalines and
-46oC– 150oC PN 20 – 100
should not be used in compressed air lines.
Fluorosilcione is a silicone polymer chain with fluorinated side-chains for improved oil and -50oF – 320oF Class 150 – 600
FVMQ
fuel resistance. The mechanical and physical properties are very similar to those of silicone. -46oC– 177oC PN 20 – 100
-49oF – 428oF Class 150 – 600
AFLAS® AFLAS® is highly resistant to a wide range of chemicals
-29oC– 220oC PN 20 – 100

16
 BUTTERFLY VALVE

VALVE FIGURE NUMBER HOW TO ORDER

Nominal Valve Pressure End Conn. Construct- Body Trim Seat O-ring Operation
Size Type Rating ion Material Material Mode
A B C D E F G H I J
e.g. 1 6 B U 3 W 3 C 4 0 1 M 1 G

is a NPS 16 Class 300, Butterfly Valve, Wafer Type, Triple Offset, A216 WCB body, 13Cr Trim, Viton O-ring, Gear Operated.

A Nominal Size
00 Special 02 2 (DN 50) 07 8 RB 19 20 RB 31 32 RB
F1 3/8 (DN 10) R2 2 RB 08 8 (DN 200) 20 20 (DN 500) 32 32 (DN 800)
F2 1/2 (DN 15) F6 2 ½ (DN 65) 09 10 RB 21 22 RB 33 34 RB
0R 1/2 RB 3R 2 ½ RB 10 10 (DN 250) 22 22 (DN 550) 34 34 (DN 850)
F3 3/4 (DN 20) 03 3 (DN 80) 11 12 RB 23 24 RB 35 36 RB
R0 3/4 RB R3 3 RB 12 12 (DN 300 24 24 (DN 600) 36 36 (DN 900)
01 1 (DN 25) 04 4 (DN 100) 13 14 RB 25 26 RB 37 38 RB
R1 1 RB R4 4 RB 14 14 (DN 350) 26 26 (DN 650) 38 38 (DN 950)
F4 1¼ (DN 32) 05 5 (DN 125) 15 16 RB 27 28 RB 39 40 RB
1R 1¼ RB R5 5 RB 16 16 (DN 400) 28 28 (DN 700) 40 40 (DN 1000)
F5 1½ (DN 40) 06 6 (DN 150) 17 18 RB 29 30 RB 41 42 RB
2R 1½ RB R6 6 RB 18 18 (DN 450) 30 30 (DN 750) … More as such

B Valve Type C Pressure Rating D End Connection

BU Butterfly Valve 0 Special 7 Class 2500 X Special B Butt-Weld (BW)
1 Class 150 9 Class 900 R RF Flanged S Socket-Weld (SW)
3 Class 300 8 Class 800 J RTJ Flanged W Wafer
5 Class 1500 2 Class 125(PN16) F FF Flanged L Lug
6 Class 600 4 Class 400(PN64) T Threaded

E Construction F Body Material

1 Concentric X0 Special M9 A182 F22 CL 3 L5 A350 LF3 S6 A351 CF8M
2 Double Offset C1 A105 M0 A217 WC9 L6 A352 LC3 S7 A182 F316L
3 Triple Offset C2 A216 WCA E1 A182 F5 L7 A350 LF5 S8 A351 CF3M
C4 A216 WCB E2 A217 C5 L8 A352 LCB S9 A182 F347
C6 A216 WCC E4 A217 C6 L9 A350 LF6 S0 A351 C F8C
M1 A182 F1 E5 A182 F9 LA A350 LF9 D1 A182 F51
M2 A217 WC1 E6 A217 C12 LB A352 LC9 D2 A995 4A
M3 A182 F2 E7 A182 F91 LD A352 LCC D3 A182 F53
M4 A217 WC4 E8 A217 C12A S1 A182 F304 D4 A995 5A
M5 A182 F12 CL 2 L1 A350 LF1 S2 A351 CF8 D5 A182 F55
M6 A217 WC5 L2 A352 LCA S3 A182 F304L D6 A995 6A
M7 A182 F11 CL 2 L3 A350 LF2 S4 A351 CF3
M8 A217 WC6 L4 A352 LC2 S5 A182 F316

G Trim Material G Seat I O-Ring J Operation

00 Special E EPDM 0 None B Bare Stem

01 13Cr/13Cr T PTFE 1 Viton L Lever
02 304/13Cr R RPTFE 2 Teflon
G Gearbox
C 13Cr+Composite 3 HNBR
03 316/13Cr P Pneumatic
S SS304+Composite 4 NBR
04 304/304 E Electric
G SS316+Composite 5 Special
05 316/316 C Gear w/ Chain
6 EPDM
06 316/17-4PH 7 FVMQ N Pneumatic-Hydraulic
8 FFKM S Solid Lever
9 AFLAS D Lever with locking device
R Solid lever with locking device

17
 BUTTERFLY VALVE

HOW THE FIGURE NUMBER SYSTEM WORKS

Introduction. Figure number system uses a code consisting 14 digits of letters and numbers to represent the
specification of a valve of certain specification. Among 14 digits, they are separated into 10 groups identified by
letters from A to J. Each group represents a parameter of a valve, together they contain almost all the essential
parameters of the valve.

Uses. Using the figure number system to generate a code is easy. Under each group, the code is shown on the left
while on the right is the meaning of the code. Start by selecting a code from group A, through group J. If the
specification of the valve is not listed, select the code for “Special “. The total length of the figure number shall be
exactly 14 digits.

Cautions. It is advised that you have as detailed the specification as possible to generate a figure number, which
means eliminating “Specials”. If you don’t have enough specification or information about the valve you are
ordering, or you’re not sure how to use the system to generate a figure number, contact one of our sales
representatives for help.

Note: FBV reserves the right to make any modifications without notice.

18
 Offshore

Pipeline Onshore

Refinery

IMPORTANT NOTICE

 All dimensions in inches not listed in standards are converted from millimeters. Weights in lbs (pounds) are converted from kilograms.
 Data listed in the catalog, including dimensions, weights, specifications and other valve related data are intended to provide general
information and guidance only.
 FBV Inc. assumes no responsibility for errors or inadequacy relevant to any information provided in this catalog. Any information provided
in this catalog is subject to change without notice.
2121 Brittmoore Rd Suite 4000 T 832-203-5459
Houston, TX 77043 USA F 832-203-5461 E sales@fbvalve.com www.fbvalve.com

© FBV Inc. All rights reserved.