- Butterfly valves
- Wafer type with double offset

Wafer type double offset butterfly valves
- Description
- Catalog
- Design
- Classifier
- The main overall and mounting dimensions
- Specifications
DN 150 PN 16
body material WCB steel, disk material CF8 stainless steel, seat material PTFE
by request
+ | - |
DN 50 PN 10
body material GG25 iron, disk material CF8 stainless steel, seat material EPDM
by request
+ | - |
DN 65 PN 10
body material GG25 iron, disk material CF8 stainless steel, seat material EPDM
by request
+ | - |
DN 80 PN 10
body material GG25 iron, disk material CF8 stainless steel, seat material EPDM
by request
+ | - |
DN 100 PN 10
body material GG25 iron, disk material CF8 stainless steel, seat material EPDM
by request
+ | - |
DN 125 PN 10
body material GG25 iron, disk material CF8 stainless steel, seat material EPDM
by request
+ | - |
DN 150 PN 10
body material GG25 iron, disk material CF8 stainless steel, seat material EPDM
by request
+ | - |
DN 200 PN 10
body material GG25 iron, disk material CF8 stainless steel, seat material EPDM
by request
+ | - |
DN 250 PN 10
body material GG25 iron, disk material CF8 stainless steel, seat material EPDM
by request
+ | - |
DN 300 PN 10
body material GG25 iron, disk material CF8 stainless steel, seat material EPDM
by request
+ | - |
DN 350 PN 10
body material GG25 iron, disk material CF8 stainless steel, seat material EPDM
by request
+ | - |
DN 400 PN 10
body material GG25 iron, disk material CF8 stainless steel, seat material EPDM
by request
+ | - |
Description
Valves of this series are designed for operation in harsher conditions than valves with a symmetrical disk (high temperatures, more cycles of actuation). The disk is installed in the body with an offset relative to the axis of symmetry of the valve body and the pipeline axis. The seat and the disc have a conical profile, which together with a double offset allows the disk to come out of contact with the seat at minimum opening angles. Connection type is wafer. Valves of series PA400 are produced with sealing of 3 designs: with soft PTFE seat, in fire-safe design and with "metal-on-metal" seat. Butterfly valves series PA400 are used in oil refining, chemical industry, metallurgy, technological pipelines of industrial enterprises, in energy industry, shipbuilding. |
Manufacture and supply: | Acc. to TU 3700-001-55604618-2013 |
Type of construction: | Butterfly valves with double offset |
Nominal diameter: | DN 50 – DN 1000 mm |
Nominal pressure: | - PN 10, 16, 25, 40 kgf/cm2 |
Temperature of working medium: | Up to +450 ° С depending on the seat material |
Operation: |
– gearbox DN 50-1000 mm – electric or pneumatic actuator DN 50-1000 mm |
Leakage class: | «А» acc. to GOST 9544-2015 |
Main working mediums: | Water, air, low pressure steam, oil, oil products, acids, alkalis, hydrocarbons, alcohols, seawater |
Connection type: |
- wafer type with smooth lugs; - wafer type with threaded lugs; Connecting flanges according to GOST 33259-2015 |
Installation position: | Any, except the position "electric actuator down" for valves with electric actuator |
Flow direction of the working mediums: | Any |
Climatic version: | У, УХЛ, Т, ТМ, ТВ acc. to GOST 15150-69 |
Top flange: | Acc. to ISO 5211 |
Design
Classifier

The main overall and mounting dimensions
Wafer type with smooth lugs
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DN | PN10 | PN16 | ||||||||||
Dimensions, mm | Weight with gearbox, kg | Dimensions, mm | with gearbox, kg | |||||||||
A | B | L | D1 | n*d | A | B | L | D1 | n*d | |||
50 | 65 | 175 | 43 | 125 | 4×18 | 9 | 80 | 175 | 43 | 125 | 4×18 | 9 |
65 | 75 | 190 | 46 | 145 | 4×18 | 10 | 90 | 190 | 46 | 145 | 4×18 | 10 |
80 | 105 | 195 | 49 | 160 | 4×18 | 11 | 105 | 195 | 49 | 160 | 4×18 | 11 |
100 | 117 | 215 | 52 | 180 | 8×18 | 14 | 117 | 215 | 52 | 180 | 8×18 | 14 |
125 | 135 | 250 | 56 | 210 | 8×18 | 22 | 135 | 250 | 56 | 210 | 8×18 | 22 |
150 | 176 | 270 | 61 | 240 | 8×22 | 25 | 176 | 270 | 61 | 240 | 8×22 | 25 |
200 | 202 | 320 | 64 | 295 | 8×22 | 38 | 202 | 320 | 64 | 295 | 12×22 | 38 |
250 | 235 | 355 | 71 | 350 | 12×22 | 53 | 235 | 355 | 71 | 355 | 12×26 | 53 |
300 | 265 | 385 | 82 | 400 | 12×22 | 63 | 265 | 385 | 82 | 410 | 12×26 | 63 |
350 | 305 | 415 | 92 | 460 | 16×22 | 94 | 305 | 415 | 92 | 470 | 16×26 | 94 |
400 | 335 | 470 | 102 | 515 | 16×26 | 140 | 335 | 470 | 102 | 525 | 16×30 | 140 |
500 | 405 | 535 | 127 | 620 | 20×26 | 190 | 405 | 535 | 127 | 650 | 20×33 | 190 |
600 | 450 | 610 | 154 | 725 | 20×30 | 290 | 450 | 610 | 154 | 770 | 20×39 | 290 |
700 | 520 | 680 | 165 | 840 | 24×30 | 430 | 520 | 680 | 165 | 840 | 24×39 | 430 |
800 | 590 | 750 | 190 | 950 | 24×33 | 535 | 590 | 750 | 190 | 950 | 24×39 | 535 |
900 | 650 | 800 | 203 | 1050 | 28×33 | 708 | 650 | 800 | 203 | 1050 | 28×39 | 708 |
1000 | 720 | 920 | 216 | 1160 | 28×33 | 1090 | 720 | 920 | 216 | 1170 | 28×45 | 1090 |
DN | PN25 | PN40 | ||||||||||
Dimensions, mm | Weight with gearbox, kg | Dimensions, mm | Weight with gearbox, kg | |||||||||
A | B | L | D1 | n*d | A | B | L | D1 | n*d | |||
50 | 65 | 175 | 43 | 125 | 4×18 | 9 | 80 | 175 | 43 | 125 | 4×18 | 11 |
65 | 75 | 190 | 46 | 145 | 8×18 | 10 | 90 | 190 | 46 | 145 | 8×18 | 12 |
80 | 90 | 195 | 49 | 160 | 8×18 | 11 | 105 | 195 | 64 | 160 | 8×18 | 13 |
100 | 117 | 215 | 52 | 190 | 8×22 | 14 | 117 | 220 | 64 | 190 | 8×22 | 17 |
125 | 135 | 250 | 56 | 220 | 8×26 | 22 | 155 | 260 | 70 | 220 | 8×26 | 27 |
150 | 176 | 270 | 61 | 250 | 8×26 | 25 | 175 | 320 | 76 | 250 | 8×26 | 30 |
200 | 185 | 320 | 64 | 310 | 12×26 | 38 | 220 | 330 | 89 | 320 | 12×30 | 46 |
250 | 215 | 360 | 71 | 370 | 12×30 | 53 | 250 | 370 | 114 | 385 | 12×33 | 64 |
300 | 250 | 395 | 82 | 430 | 16×30 | 63 | 300 | 435 | 114 | 450 | 16×33 | 76 |
350 | 283 | 455 | 92 | 490 | 16×33 | 94 | 330 | 480 | 127 | 510 | 16×33 | 113 |
400 | 325 | 480 | 102 | 550 | 16×33 | 140 | 340 | 535 | 140 | 585 | 12×39 | 168 |
500 | 375 | 580 | 127 | 660 | 20×39 | 210 | 415 | 610 | 152 | 670 | 20×45 | 252 |
600 | 430 | 640 | 154 | 770 | 20×39 | 315 | 480 | 630 | 178 | 795 | 20×52 | 378 |
700 | 540 | 720 | 165 | 875 | 24×45 | 461 | 550 | 730 | 229 | 900 | 24×52 | 553 |
800 | 710 | 820 | 190 | 990 | 24×45 | 595 | 620 | 810 | 241 | 1030 | 24×56 | 714 |
900 | 650 | 800 | 203 | 1090 | 28×52 | 752 | ||||||
1000 | 720 | 940 | 216 | 1210 | 28×56 | 1270 |
Wafer type with threaded lugs
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DN | PN10 | PN16 | ||||||||||
Dimensions, mm | Weight with gearbox, kg | Dimensions, mm | Weight with gearbox, kg | |||||||||
A | B | L | D1 | n*d | A | B | L | D1 | n*М | |||
50 | 65 | 175 | 43 | 125 | 4×М16 | 16 | 80 | 175 | 43 | 125 | 4×М16 | 16 |
65 | 75 | 190 | 46 | 145 | 4×М16 | 17 | 90 | 190 | 46 | 145 | 4×М16 | 17 |
80 | 90 | 195 | 49 | 160 | 8×М16 | 18 | 105 | 195 | 49 | 160 | 8×М16 | 18 |
100 | 117 | 215 | 52 | 190 | 8×М16 | 21 | 117 | 215 | 52 | 180 | 8×М16 | 21 |
125 | 135 | 250 | 56 | 220 | 8×М16 | 34 | 135 | 250 | 56 | 210 | 8×М16 | 34 |
150 | 176 | 270 | 61 | 250 | 8×М20 | 43 | 176 | 270 | 61 | 240 | 8×М20 | 43 |
200 | 185 | 320 | 64 | 310 | 12×М20 | 58 | 202 | 320 | 64 | 295 | 12×М20 | 58 |
250 | 215 | 360 | 71 | 370 | 12×М24 | 72 | 235 | 355 | 71 | 355 | 12×М24 | 72 |
300 | 250 | 395 | 82 | 430 | 12×М24 | 105 | 265 | 385 | 82 | 410 | 12×М24 | 105 |
350 | 283 | 455 | 92 | 490 | 16×М24 | 154 | 305 | 415 | 92 | 470 | 16×М24 | 154 |
400 | 325 | 480 | 102 | 550 | 16×М27 | 202 | 335 | 470 | 102 | 525 | 16×М27 | 202 |
500 | 375 | 580 | 127 | 660 | 20×М30 | 231 | 405 | 535 | 127 | 650 | 20×М30 | 231 |
600 | 430 | 640 | 154 | 770 | 20×М33 | 318 | 450 | 610 | 154 | 770 | 20×М33 | 318 |
700 | 540 | 720 | 165 | 875 | 24×М33 | 490 | 520 | 680 | 165 | 840 | 24×М33 | 490 |
800 | 710 | 820 | 190 | 990 | 24×М36 | 715 | 590 | 750 | 190 | 950 | 24×М36 | 715 |
900 | 650 | 800 | 203 | 1090 | 28×М36 | 1000 | 650 | 800 | 203 | 1050 | 28×М36 | 1000 |
1000 | 720 | 940 | 216 | 1210 | 28×М39 | 1349 | 720 | 920 | 216 | 1170 | 28×М39 | 1349 |
DN | PN25 | PN40 | ||||||||||
Dimensions, mm | Weight with gearbox, kg | Dimensions, mm | Weight with gearbox, kg | |||||||||
A | B | L | D1 | n*M | A | B | L | D1 | n*M | |||
50 | 65 | 175 | 43 | 125 | 4×М16 | 16 | 80 | 175 | 43 | 125 | 4×М16 | 18 |
65 | 75 | 190 | 46 | 145 | 8×М16 | 17 | 90 | 190 | 46 | 145 | 8×М16 | 19 |
80 | 90 | 195 | 49 | 160 | 8×М16 | 19 | 105 | 195 | 64 | 160 | 8×М16 | 22 |
100 | 117 | 215 | 52 | 190 | 8×М20 | 22 | 117 | 220 | 64 | 190 | 8×М20 | 25 |
125 | 135 | 250 | 56 | 220 | 8×М24 | 36 | 155 | 260 | 70 | 220 | 8×М24 | 42 |
150 | 176 | 270 | 61 | 250 | 8×М24 | 47 | 175 | 320 | 76 | 250 | 8×М24 | 61 |
200 | 185 | 320 | 64 | 310 | 12×М27 | 62 | 220 | 330 | 89 | 320 | 12×М27 | 71 |
250 | 215 | 360 | 71 | 370 | 12×М27 | 78 | 250 | 370 | 114 | 385 | 12×М30 | 115 |
300 | 250 | 395 | 82 | 430 | 16×М27 | 139 | 300 | 435 | 114 | 450 | 16×М30 | 159 |
350 | 283 | 455 | 92 | 490 | 16×М30 | 165 | 330 | 480 | 127 | 510 | 16×М33 | 251 |
400 | 325 | 480 | 102 | 550 | 16×М33 | 263 | 340 | 535 | 140 | 585 | 16×М36 | 314 |
500 | 375 | 580 | 127 | 660 | 20×М33 | 311 | 415 | 610 | 152 | 670 | 20×М39 | 353 |
600 | 430 | 640 | 154 | 770 | 20×М36 | 357 | 480 | 630 | 178 | 795 | 20×М45 | 428 |
700 | 540 | 720 | 165 | 875 | 24×М39 | 548 | 550 | 730 | 229 | 900 | 24×М45 | 634 |
800 | 710 | 820 | 190 | 990 | 24×М45 | 774 | 620 | 810 | 241 | 1030 | 24×М52 | 1054 |
900 | 650 | 800 | 203 | 1090 | 28×М45 | 1238 | ||||||
1000 | 720 | 940 | 216 | 1210 | 28×М52 | 1457 |
Top flange's dimensions and torque for choosing actuator*
DN | PN10 | PN16 | PN25 | PN40 | ||||
Top flange acc. to ISO |
Torque, Н*m |
Top flange acc. to ISO |
Torque, Н*m |
Top flange acc. to ISO |
Torque, Н*m |
Top flange acc. to ISO |
Torque, Н*m | |
50 | F07 | 24 | F07 | 24 | F07 | 29 | F07 | 70 |
65 | F07 | 35 | F07 | 35 | F07 | 42 | F07 | 95 |
80 | F07 | 54 | F07 | 54 | F07 | 65 | F07 | 110 |
100 | F07 | 88 | F07 | 88 | F07 | 106 | F07 | 180 |
125 | F10 | 130 | F10 | 130 | F10 | 156 | F10 | 290 |
150 | F10 | 200 | F10 | 200 | F10 | 240 | F12 | 470 |
200 | F10 | 340 | F10 | 340 | F10 | 340 | F12 | 820 |
250 | F12 | 570 | F12 | 570 | F12 | 684 | F14 | 1340 |
300 | F12 | 835 | F12 | 835 | F12 | 1002 | F14 | 2000 |
350 | F14 | 1180 | F14 | 1180 | F14 | 1416 | F16 | 2820 |
400 | F16 | 1740 | F16 | 1740 | F16 | 2088 | F25 | 4400 |
500 | F16 | 3050 | F16 | 3050 | F16 | 3660 | F25 | 7660 |
600 | F25 | 5450 | F25 | 5450 | F25 | 6540 | F30 | 13220 |
700 | F25 | 8000 | F25 | 8000 | F25 | 9600 | F35 | 19400 |
800 | F30 | 10600 | F30 | 10600 | F30 | 12720 | F35 | 28300 |
900 | F30 | 14500 | F30 | 14500 | F30 | 17400 | ||
1000 | F35 | 19200 | F35 | 19200 | F35 | 23040 |
* the dimensions and the shape of the stemp should be requested additionaly
Specifications
Flow capacity of valves Kv, m3/h
DN | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
Kv | 88 | 136 | 158 | 320 | 678 | 1160 | 2414 | 3685 | 5681 |
DN | 350 | 400 | 450 | 500 | 600 | 700 | 800 | 900 | 1000 |
Kv | 6525 | 8376 | 8974 | 11558 | 17060 | 23969 | 39087 | 41456 | 52971 |
Reliability parameters of butterfly valves
DN | 40-100 | 125,150 | 200-300 | 350,400 | 450-600 | 700-900 | 1000,1200 |
Mean life, cycles, not less than | 5200 | 4200 | 3800 | 3200 | 2200 | 1800 | 1700 |
Warranty life, cycles, not less than | 1900 | 1600 | 1500 | 1300 | 900 | 700 | 550 |
Average life and warranty life of the sealing materials identified when testing valves with water according to GOST 2874-82
When operating valves for working mediums other than water, the reliability parameters are determined by the specific mediums, depending on its parameters.
Warranty
The warranty period is 18 months from the date of putting into operation, but not more than 24 months from the date of sale under condition of observance by the consumer of rules of transportation, installation and operation.
Conservation period - 3 years.
Average service life of body parts is not less than 30 years.
Average life removable parts and components – at least 5 years.
- PTFE-lined butterfly valves of PA 200 series
- Butterfly valves of PA 300 series
- Butterfly valves with double offset of PA 400 series
- Butterfly valves of PA 600 series
- Butterfly valves with double offset of PA 700 series
- Butterfly valves with tripple offset of PA 900 series
- Knife gate valves of PromArm manufacturing


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