Flange Center Line Butterfly Valve is a gate valve that has different modifications. The gate is in the shape of a disc that is attached to a centered axis. The look resembles a butterfly. The centerline design allows for the control of the fluid flow. The Center Line Resilient Seated Butterfly Valves have one handle or actuator, stem, body, resilient seat, butterfly disc and the end packaging. The flanged valves also have flanged endings. These are to be connected to the flanged end pipes. There are different design variations in the valves such as the Single Type Flange Center Line Butterfly Valve and others.
Stainless steel centerline butterfly valves
ASTM A351 CF8 Centerline Rs Butterfly Valves
CF8M SS Centerline Wafer Valve
The valve body is often made up of cast iron or ductile iron. The disc is made of stainless steel or ductile iron. The stem is of stainless steel. The Centerline Butterfly Valve can have the seat in EPDM, NBR, VITON or PTFE material. There are different standards for the face to face connections, the flange ends and the test types. The face to face can be of ANSI B16.1, the flange end of ANSI B16.5 and the tests vary according to the API 598 standards. The Ductile iron Center Line Butterfly Valve can vary in size and dimensions according to these standards. The pressure capacities also differ with the standards.
Size | 50NB — 600NB |
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Pressure | 150PS1 |
Temperature | 0 Deg C - 1200 Deg C. |
Body , Chest | Solid One piece casting of Cast Iron Fg 260, Cast Steel Gr WCB ,CF8,CF8M. |
Seat | Integral to Body, Soft, Optional. |
Gate | AISI SS 304,316,316L,317,317L |
Screw Spindle | AISI SS 410,304,316. |
Nut | Brass |
Yoke | Plate type of MS . |
Gland Follower | Cast Iron , Cast steel , Ductile Iron ,CF8,CF8M. |
Hand Wheel | Cast Iron , Cast steel , Ductile Iron |
Gland Packing | PTFE , PTFE Impregnated |
Ends | Lugged |
Port | STANDARD [Round], Optional V Port, Diamond Port,. |
Class | Liquid Sgell Test | Liquid Sgell Test | Air Seat Test |
Mpa | Mpa | Mpa | |
CI - 125LB | 1.5 | 1.1 | 0.6 |
DI - 150LB | 1.5 | 1.1 | 0.6 |
CI/DI - 10K | 1.5 | 1.1 | 0.6 |
CI/DI - PN10/16 | 1.5 | 1.1 | 0.6 |
No | Parts Name | Material |
1 | Body | C.I. / D.I. / C.S. / S.S. |
2 | Seat | NBR / EPDM / VITON / PTFE |
3 | Stem | SS410 / SS304 / SS216 |
4 | Disc | A536 60-40-18 / CF8 / CF8M / Br / AI-Br |
5 | Pin | SS304 / SS316 |
6 | O-Ring | NBR / EPDM / VITON |
7 | Key | Carbon Steel / SUS304 / SUS316 |
8 | O-Ring | NBR / EPDM / VITON |
9 | Bearing | Carbon Steel / SUS304 / SUS316 |
10 | End Cover | C.I. / D.I. / C.S. / S.S. |
DN | NPS | C | A | B | L | ∮D1 | ∮D2 | ∮D | N - ∮D | Weight (kg) | ||||||||||
10K | 150LB | PN10 | PN16 | 10K | 150LB | PN10 | PN16 | 10K | 150LB | PN10 | PN16 | SF | DF | |||||||
550 | 22" | 1522 | 537 | 369 | 66 | 745 | - | - | - | 680 | - | - | - | 543 | 20-33 | - | - | - | 175 | - |
600 | 24" | 152 | 562 | 393 | 66 | 795 | 813 | 780 | 840 | 730 | 749.3 | 725 | 770 | 572 | 24-33 | 20-30 | 20-30 | 20-36 | 188 | - |
650 | 26" | 165 | 591 | 406 | 66 | 845 | 870 | - | - | 780 | 806.5 | - | - | 626 | 24-33 | 24-35 | - | - | 271 | - |
700 | 28" | 153 | 624 | 454 | 66 | 905 | 927 | 895 | 910 | 840 | 863.6 | 840 | 840 | 676 | 24-33 | 28-35 | 24-36 | 24-36 | 284 | - |
750 | 30" | 167 | 660 | 560 | 66 | 970 | 984 | - | - | 900 | 914.4 | - | - | 744 | 24-33 | 28-35 | - | - | - | 370 |
800 | 32" | 188 | 672 | 525 | 66 | 1020 | 1060 | 1015 | 1025 | 950 | 977.9 | 950 | 950 | 772 | 28-33 | 28-41 | 24-39 | 24-39 | 368 | - |
900 | 36" | 203 | 720 | 656 | 118 | 1120 | 1168 | 1115 | 1115 | 1050 | 1085.9 | 1050 | 1050 | 865 | 28-33 | 32-41 | 28-39 | 28-39 | - | 591 |
1000 | 40" | 216 | 800 | 580 | 141 | 1235 | 1289 | 1230 | 1230 | 1160 | 1200.2 | 1160 | 1170 | 941 | 28-39 | 36-41 | 28-42 | 28-42 | 864 | - |
1050 | 42" | 251 | 858 | 777 | 150 | - | 1346 | - | - | - | 1257.3 | - | - | 1030 | - | 36-41 | - | - | - | 811 |
1200 | 48" | 276 | 941 | 864 | 150 | 1465 | 1511 | 1455 | 1455 | 1380 | 1422.4 | 1380 | 1390 | 1160 | 32-39 | 44-41 | 32-39 | 32-48 | - | 980 |
Parts Name | Material |
Body | Cast iron、Ductile iron |
Disc | Ductile iron、Stainless Steel |
Stem | Stainless Steel |
Seat | EPDM、NBR、VITON、PTFE |
Face to Face | Flange End | Test |
GB12221-89, ANSI B16.1, JIS B2002 | GB4216.4-84, GB9113.3-88, ANSI B16.5, JIS B2212 | GB/T13927-92, API598 |
Nominal Diameter (mm) | Nominal Pressure PN(MPa) |
DN50-DN1000 | 1.0~1.6, 150Lb, 10K |
Centerline Resilient Seated Butterfly Valves
Stainless Steel Centerline Valves Series 200
Stainless Steel 304 Center Line Resilient Seated Butterfly Valves
ASTM A351 CF8M Centerline Rs Butterfly Valves
Ductile iron Centerline Wafer Butterfly Valve
A351 CF8 Centerline Series 225 Butterfly Valve
Test Pressure | |
Shell Test | Seal Test |
1.5~2.4 | 1.1~1.76 |
DN(mm) | SIZE(mm) | |||||||||||||
L | D | D1 | b | Z-ɸd | ||||||||||
1.0 | 1.6 | 150 | 10K | 1.0 | 1.6 | 150 | 10K | 1.0 | 1.6 | 150 | 10K | |||
50 | 108 | 165 | 165 | 152 | 155 | 125 | 125 | 120.5 | 120 | 18 | 4-ɸ18 | 4-ɸ18 | 4-ɸ19 | 4-ɸ19 |
65 | 112 | 185 | 185 | 178 | 175 | 145 | 145 | 139.5 | 140 | 18 | 4-ɸ18 | 4-ɸ18 | 4-ɸ19 | 4-ɸ19 |
80 | 114 | 200 | 200 | 190 | 185 | 160 | 160 | 152.5 | 150 | 20 | 8-ɸ18 | 8-ɸ18 | 4-ɸ19 | 8-ɸ19 |
100 | 127 | 220 | 220 | 229 | 210 | 180 | 180 | 190.5 | 175 | 20 | 8-ɸ18 | 8-ɸ18 | 8-ɸ19 | 8-ɸ19 |
125 | 140 | 250 | 250 | 254 | 250 | 210 | 210 | 216 | 210 | 22 | 8-ɸ18 | 8-ɸ18 | 8-ɸ22 | 8-ɸ23 |
150 | 140 | 285 | 285 | 279 | 280 | 240 | 240 | 241.5 | 240 | 22 | 8-ɸ22 | 8-ɸ22 | 8-ɸ22 | 8-ɸ23 |
200 | 152 | 340 | 340 | 343 | 330 | 295 | 295 | 298.5 | 290 | 24 | 8-ɸ22 | 12-ɸ22 | 8-ɸ22 | 12-ɸ23 |
250 | 165 | 390 | 405 | 406 | 400 | 350 | 355 | 362 | 350 | 24 | 12-ɸ22 | 12-ɸ26 | 12-ɸ25 | 12-ɸ25 |
300 | 178 | 440 | 460 | 483 | 445 | 400 | 410 | 432 | 400 | 26 | 12-ɸ22 | 12-ɸ26 | 12-ɸ25 | 16-ɸ25 |
350 | 190 | 500 | 520 | 533 | 490 | 460 | 470 | 476 | 445 | 26 | 16-ɸ22 | 16-ɸ26 | 16-ɸ29 | 16-ɸ25 |
400 | 216 | 565 | 580 | 597 | 560 | 515 | 525 | 540 | 510 | 28 | 16-ɸ26 | 16-ɸ30 | 16-ɸ29 | 16-ɸ27 |
450 | 222 | 615 | 640 | 635 | 620 | 565 | 585 | 578 | 565 | 30 | 20-ɸ26 | 20-ɸ30 | 16-ɸ32 | 20-ɸ27 |
500 | 229 | 670 | 715 | 698 | 675 | 620 | 650 | 635 | 620 | 32 | 20-ɸ26 | 20-ɸ33 | 20-ɸ32 | 20-ɸ27 |
600 | 267 | 780 | 840 | 813 | 795 | 725 | 770 | 749.5 | 730 | 34 | 20-ɸ30 | 20-ɸ36 | 20-ɸ35 | 24-ɸ33 |
700 | 292 | 895 | 910 | 840 | 840 | 36 | 24-ɸ30 | 24-ɸ36 | ||||||
800 | 318 | 1015 | 1025 | 950 | 950 | 36 | 24-ɸ30 | 24-ɸ39 | ||||||
900 | 330 | 1115 | 1125 | 1050 | 1050 | 40 | 28-ɸ33 | 28-ɸ39 | ||||||
1000 | 410 | 1230 | 1255 | 1160 | 1170 | 42 | 28-ɸ36 | 28-ɸ42 |
Dimensions 2" - 30" Wafer & Lug For installation and maintenance instructions, please refer to the IOM manual. |
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Inches / mm | A | B | C | D | E | F | G | H | J |
2", 50 | 6 3/8, 161.93 | 3 3/16, 80.96 | 1 7/8, 47.63 | 1 1/4, 31.75 | 1/2, 12.70 | 3/8, 9.53 | 2.76, 70 | 0.39, 10 | 2 3⁄4, 69.85 |
2 1/2", 65 | 6 7/8, 174.63 | 3 1/2, 88.90 | 2, 50.80 | 1 1/4, 31.75 | 1/2, 12.70 | 3/8, 9.53 | 2.76, 70 | 0.39, 10 | 2 3⁄4, 69.85 |
3", 80 | 7 1/8, 180.98 | 3 3/4, 95.25 | 2, 50.80 | 1 1/4, 31.75 | 1/2, 12.70 | 3/8, 9.53 | 2.76, 70 | 0.39, 10 | 2 3⁄4, 69.85 |
4", 100 | 7 7/8, 200.03 | 4 1/2, 114.30 | 2 1/8, 53.98 | 1 1/4, 31.75 | 5/8, 15.88 | 3/8, 9.53 | 2.76, 70 | 0.47, 12 | 2 3⁄4, 69.85 |
5", 125 | 8 3/8, 212.73 | 5, 127.00 | 2 3/8, 60.33 | 1 1/4, 31.75 | 3/4, 19.05 | 3/8, 9.53 | 2.76, 70 | 0.55, 14 | 2 3⁄4, 69.85 |
6", 150 | 8 7/8, 225.43 | 5 1/2, 139.70 | 2 3/8, 60.33 | 1 1/4, 31.75 | 3/4, 19.05 | 3/8, 9.53 | 2.76, 70 | 0.55, 14 | 2 3⁄4, 69.85 |
8", 200 | 10 1/4, 260.35 | 6 7/8, 174.63 | 2 1/2, 63.50 | 1 3/4, 44.45 | 7/8, 22.23 | 7/16, 11.11 | 4.02, 102 | 0.67, 17 | 3 3/4, 95.33 |
10", 250 | 11 1/2, 292.10 | 8, 203.20 | 2 3/4, 69.85 | 1 3/4, 44.45 | 1 1/8, 28.58 | 7/16, 11.11 | 4.02, 102 | 0.87, 22 | 3 3/4, 95.33 |
12" , 300 | 13 1/4, 336.55 | 9 5/8, 244.48 | 3 1/8, 79.38 | 1 3/4, 44.45 | 1 1/4, 31.75 | 7/16, 11.11 | 4.02, 102 | 0.95, 24 | 3 3/4, 95.33 |
14", 350 | 14 1/2, 368.30 | 10 1/2, 266.70 | 3 1/8, 79.38 | 1 3/4, 44.45 | 1 1/4, 31.75 | 7/16, 11.11 | 4.02, 102 | 0.95, 24 | 3 3/4, 95.33 |
16", 400 | 15 3/4, 400.05 | 12 7/8, 327.02 | 3 1/2, 88.90 | 2, 50.80 | 1 5/16, 33.34 | 7/8, 22.23 | 6.50, 165 | 1.06, 27 | 6 1/2, 165.10 |
18", 450 | 16 5/8, 422.28 | 13 5/8, 346.08 | 4 1/4, 107.95 | 2, 50.80 | 1 1/2, 38.10 | 7/8, 22.23 | 6.50, 165 | 1.06, 27 | 6 1/2, 165.10 |
20", 500 | 18 7/8, 479.43 | 15 1/8, 384.18 | 5 3/8, 136.53 | 2 3/4, 63.50 | 1 5/8, 41.28 | 7/8, 22.23 | 6.50, 165 | 1.26, 32 | 6 1/2, 165.10 |
24", 600 | 22 1/8, 561.98 | 18 3/8, 466.73 | 6 1/8, 155.58 | 2 3/4, 69.85 | 2, 50.80 | 7/8, 22.23 | 6.50, 165 | 1.42, 36 | 6 1/2, 165.10 |
30", 750 | 25 1/2, 647.70 | 24 3/4, 628.65 | 6 3/4, 171.45 | 3 1/4, 82.55 | 2 1/2, 63.50 | 7/8, 22.23 | 8 1/2, 215.90 | N/A | 11 1/4, 285.75 |
*Dimensions 28" - 48" Double Flanged For installation and maintenance instructions, please refer to the IOM Manual. |
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, | , | A | B | C | D | E | F | G | H | J |
28 | in | 24.6 | 20.5 | 6.6 | 3.7 | 2.2 | 0.7 | 10 | 2.5 | 24 |
mm | 626 | 521 | 165 | 95 | 54 | 18 | 254 | 63.4 | 24 | |
30 | in | 26 | 21.8 | 6.7 | 3.7 | 2.2 | 0.7 | 10 | 2.5 | 24 |
mm | 660 | 554 | 167 | 95 | 54 | 18 | 254 | 63.4 | 24 | |
32 | in | 26.2 | 23.3 | 7.6 | 3.7 | 2.4 | 0.7 | 10 | 2.5 | 24 |
mm | 666 | 591 | 190 | 95 | 60.3 | 18 | 254 | 63.4 | 24 | |
36 | in | 28.4 | 25.6 | 8.1 | 5.1 | 2.4 | 0.7 | 10 | 3 | 28 |
mm | 722 | 650 | 203 | 130 | 60.3 | 18 | 254 | 75 | 28 | |
40 | in | 31.7 | 28.1 | 8.7 | 5.1 | 2.4 | 0.7 | 10 | 3.3 | 32 |
mm | 806 | 713 | 218 | 130 | 60.3 | 18 | 254 | 85 | 32 | |
42 | in | 34.1 | 30.3 | 10 | 5.9 | 2.6 | 0.7 | 10 | 3.3 | 32 |
mm | 865 | 770 | 251 | 150 | 66 | 18 | 254 | 85 | 32 | |
48 | in | 36.9 | 33.7 | 10.9 | 5.9 | 2.8 | 0.9 | 11.7 | 4.1 | 40 |
mm | 938 | 855 | 276.4 | 150 | 70 | 22 | 298 | 105 | 40 |
Weight* | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
, | 1 | 1.5 | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 |
Water | 2 | 4 | 6 | 8 | 9 | 11 | 15 | 17 | 29 | 44 | 85 |
Lug | N/A | N/A | 8 | 10 | 11 | 17 | 21 | 26 | 42 | 65 | 108 |
, | , | L1 | 300#, L1 | L2 | M1 | 300#, M1 | M2 | N | Wafer | Lug | 300#, Lug | O |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2" | in | 5⁄8-11 | 5⁄8-11 | 11⁄16 | 4 | 4 | 4 | 4 | 6 lbs. | 9 lbs. | 9 lbs. | 1.26 |
mm | 17.46 | 101.60 | 2.72 kg | 4.08 kg | 4.08 kg | 32.0 | ||||||
2 1/2" | in | 5⁄8-11 | 3⁄4-10 | 11⁄16 | 4 | 8 | 4 | 4 3⁄4 | 7 lbs. | 13 lbs. | 13 lbs. | 1.83 |
mm | 17.46 | 120.65 | 3.18kg | 5.90 kg | 5.90 kg | 46.5 | ||||||
3" | in | 5⁄8-11 | 3⁄4-10 | 11⁄16 | 4 | 8 | 4 | 5 | 10 lbs. | 14 lbs. | 14 lbs. | 2.54 |
mm | 17.46 | 127.00 | 4.54 kg | 6.35 kg | 6.35 kg | 64.5 | ||||||
4" | in | 5⁄8-11 | 3⁄4-10 | 11⁄16 | 8 | 8 | 4 | 6 1/4 | 13 lbs. | 19 lbs. | 24 lbs. | 3.54 |
mm | 17.46 | 158.75 | 5.90 kg | 8.62 kg | 10.89 kg | 89.9 | ||||||
5" | in | 3⁄4-10 | 3⁄4-10 | 13⁄16 | 8 | 8 | 4 | 7 1/2 | 18 lbs. | 22 lbs. | 29 lbs. | 4.36 |
mm | 20.64 | 190.50 | 8.16 kg | 9.98 kg | 13.15 kg | 110.7 | ||||||
6" | in | 3⁄4-10 | 3⁄4-10 | 13⁄16 | 8 | 12 | 4 | 8 3⁄8 | 21 lbs | 31 lbs. | 38 lbs. | 5.74 |
mm | 20.64 | 212.73 | 9.53 kg | 14.06 kg | 17.24 kg | 145.8 | ||||||
8" | in | 3⁄4-10 | 7⁄8-9 | 13⁄16 | 8 | 12 | 4 | 10 5⁄8 | 34 lbs. | 49 lbs. | 67 lbs. | 7.63 |
mm | 20.64 | 269.88 | 15.42 kg | 22.23 kg | 30.39 kg | 193.8 | ||||||
10" | in | 7⁄8-9 | 1-8 | 15⁄16 | 12 | 16 | 4 | 12 7⁄8 | 45 lbs. | 62 lbs. | 100 lbs. | 9.54 |
mm | 23.81 | 327.03 | 20.41 kg | 28.12 kg | 45.36 kg | 242.3 | ||||||
12" | in | 7⁄8-9 | 1 1⁄8-7 | 15⁄16 | 12 | 16 | 4 | 15 7⁄8 | 74 lbs. | 105 lbs. | 144 lbs. | 11.5 |
mm | 23.81 | 403.23 | 33.57 kg | 47.63 kg | 65.32 kg | 292.1 | ||||||
14" | in | 1-8 | - | 11⁄16 | 12 | - | 4 | 17 5⁄8 | 109 lbs. | 178 lbs. | - | 12.81 |
mm | 26.99 | 447.68 | 49.44 kg | 80.74 kg | 325.4 | |||||||
16" | in | 1-8 | - | 11⁄16 | 16 | - | 4 | 20 1⁄4 | 135 lbs. | 224 lbs. | - | 15 |
mm | 26.99 | 514.35 | 61.24 kg | 101.60 kg | 381.0 | |||||||
18" | in | 11⁄8-7 | - | 1 1/4 | 16 | - | 4 | 21 1/2 | 190 lbs. | 265 lbs. | - | 16.87 |
mm | 31.75 | 546.10 | 86.18 kg | 120.20 kg | 428.5 | |||||||
20" | in | 11⁄8-7 | - | 11⁄8-7 | 20 | - | 4 | 23 3/4 | 316 lbs. | 455 lbs. | - | 18.69 |
mm | 603.25 | 143.34 kg | 206.38 kg | 474.7 | ||||||||
24" | in | 11⁄4-7 | - | 11⁄4-7 | 20 | - | 4 | 27 7/8 | 506 lbs. | 702 lbs. | - | 22.57 |
mm | 708.03 | 229.52 kg | 318.42 kg | 573.3 |
Expected Seat/Unseat Torque | |||||||||||
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in/lbs | 1 | 1.5 | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 |
Dry | 180 | 240 | 300 | 360 | 420 | 630 | 855 | 1185 | 1980 | 3045 | 4095 |
Lubricated | 90 | 120 | 150 | 180 | 210 | 315 | 429.6 | 594 | 990 | 1524 | 2052 |