AT Type Pneumatic Actuator

0.4~0.7MPa
IS05211 Connecting
Double Acting, Single Acting

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AT Type Pneumatic Actuator Product Information

AT type pneumatic actuator is one type of actuator to open, close or adjust the valve, which is driven by compressed air. It is also called as air operator or air equipment. Normally, AT type pneumatic actuator can be divided into single-acting pneumatic actuator and double-acting pneumatic actuator.
AT pneumatic actuator is one autoamtic unit of actuator and regulating mechanism. The actuator includes diaphragm type, piston type, scotch yoke type and rack-and-pinion type according to structure. The piston type actuator stroke is big, so it is mostly applicable to working condition that needs bigger thrust force. The diaphragm type actuator stroke is small, which can drive the valve stem directly. The scotch yoke type actuator is featured with big stroke, small space, and torque curve is more suitable the valve torque curve, but does not look nice, and it is mostly used with valve with big torque. The rack-and-pinion type actuator is featured with simple structure, reliable action and safe & explosion proof, it is widely applicable to working condition that require high safety specifications, such as power plant, chemical industry, oil refining and etc. AT type pneumatic actuator operated valve is driven by compressed air, and it is the drive device for starting and closing angle stroke valves such as ball valve and butterfly valve. Besides, it is the ideal device for realizing long-distance concentration of pipelines or separately controlling automatic industrial pipeline, when is equipped with solenoid valve, positioner (opening position indicator), echo device, filter, pressure reducing valve, various limit switches and hand operating devices.Flowspec Luokai can manufacture the AT type pneumatic actuator according to the standard of NAMUR, ISO5211 and DIN3337 with aluminum alloy body and stainless steel materials. Welcome to contact us for detailed information and best quotes if you have any questions or inquiries. 

1. FEATURES

  • Mounting to valve either directly or via bracket
  • Conforming to European and International Standard EN ISO 5211, preferred dimensions
  • Double rack & pinion design
  • Double acting or Spring return models utilize the same compact body design
  • Aluminum body, hard anodized externally and internally, for corrosion and wear resistance
  • Adjustable travel stops
  • Safe end cover bolting requiring no special tools.
  • Anti blow-out drive pinion.
  • Namur air connection can be easily mounted with solenoid valve.
  • Parallel and diagonal, double square(star) drive.
  • Travel adjustment (at each end) ±5°.
  • Easy field conversion between double acting and single acting models.

3. STANDARDS

  • Medium used: clean, dry and non-corrosive compressed air
  • Working pressure of air source: 2.5 bar (36psi) to 8 bar (116psi)
  • Temperature of working environment: standard: -20 ~+80 deg C
  • High temperature type: -20 ~+180 deg C (the temperature can reach 200 in short time)
  • Rotary angle: 90° ± 5°
  • Electromagnetic valve power supply: AC220V/DC24V, or according to customers’ needs
  • Model: AT series

2. WORKING PRINCIPLE

  • When the compressed air enters the pneumatic actuator r through Nozzle A, the air will drive the double piston straightly move towards both ends of the cylinder and the piston rack will drive the gear of the rotary shaft by 90 degrees counterclockwise. In this case, the valve will be opened; the air in both ends of pneumatic actuator is discharged through Nozzle B.
    On the contrary, when the compressed air enters both ends of the pneumatic actuator through Nozzle B, the air will drive the double piston to straightly move towards the middle position and the piston rack will drive the gear of the rotary shaft by 90°clockwise. In this case, the valve is closed. At this moment, the air in the middle of the pneumatic actuator is discharged through Nozzle A.
    What is aforementioned is the transmission principle. According to customer’s needs, the pneumatic actuator can be equipped with transmission principles contrary to the standard type. In other words, the valve will be opened when the rotary s haft rotates clockwise, while the valve is closed when it rotates counterclockwise.
    Single acting (spring return type) pneumatic actuation is implemented along the Nozzle A which is the air inlet, while Nozzle B is the air outlet (a muffler shall l be installed in the Nozzle B).
    When Nozzle A inlets air, the valve will be opened, while the valve will be closed by the spring force when the air source is cut off.
Components Material


序号 N0 名称Name 单台数量 Qty for Each Unit 标准材料 Standard Material 可选材料 Materials Selectable
1 螺栓 Bolt 8 不锈钢 Stainless Steel
2 螺栓垫片 Bolt Washer 8 不锈钢 Stainless Steel
3 左端盖 Left Cover 1 压铸铝合金 Aluminum Die Casting 不锈钢Stainless Steel
4 弹簧组件 Spring Components 5-12 合金弹簧钢 Alloy Spring Steel
5 活塞环 Piston Ring 2 POM
6 O型圈(活塞 ) “O” Ring(piston) 2 丁腈橡胶 NBR
7 活塞 Piston 2 压铸铝合金 Aluminum Die Casting
8 导向环 Guide Ring 2 Pa66
9 轴承(轴下) Bearing(output shaft bottom) 1 POM
10 O型圈(轴下) “O” Ring(output shaft bottom) 1 丁腈橡胶 NBR 氟橡胶硅橡胶 FPM/Q
11 输出轴 Output Shaft 1 碳钢 Carbon Steel 不锈钢 Stainless Steel
12 凸轮 Cam 1 不锈钢 Stainless Steel
13 垫片 Gasket 1 POM
14 轴承(轴上) Bearing(at the top of the shaft) 1 POM
15 O型圈(轴上) “O”Ring(at the top of the shaft) 1 丁腈橡胶NBR 氟橡胶硅橡胶FPM/Q
16 螺母 Nut 2 不锈钢 Stainless Steel
17 调节螺栓 Adjustment Bolt 2 不锈钢 Stainless Steel
18 垫片 Gasket 2 不锈钢 Stainless Steel 氟橡胶硅橡胶 FPM/Q
19 O型圈 (调节螺栓) “O” Ring(adjusting bolt) 2 丁腈橡胶 NBR 氟橡胶硅橡胶 FPM/Q
20 O型圈 (端盖) “O”Rring(cover) 2 丁腈橡胶 NBR 不锈钢 Stainless Steel
21 右端盖 Right Cover 1 压铸铝合金 Aluminum Die Casting 氟橡胶硅橡胶 FPM/Q
22 堵头 Plug 1 丁腈橡胶 NBR 不锈钢 Stainless Steel
23 缸体 Block 1 挤压铝合金Aluminum Extrusion
24 垫片 Gasket 1 POM
25 垫片 Gasket 1 不锈钢 Stainless Steel
26 轴用挡圈 Shaft Ring 1 不锈钢 Stainless Steel
27 指示器固定架 Indicator Supporting Structure 1 ABS
28 指示器主体 Main Body of the Indicator 1 ABS
29 螺钉 Bolt 1 ABS
Dimensions and Connection(mm)

型号Model AT042 AT050 AT063 AT075 AT088 AT100 AT115 AT125 AT145 AT160 AT190 AT210 AT240 AT270 AT300 AT350 AT400
ISOflange F03/F05 F03/F05 F03/F05 F05/F07 F05/F07 F07/F10 F07/F10 F07/F10 F10/F12 F10/F12 F12/F14 F12/F14 F16 F16 F16 F16/F25 F16/F25
A 122 143 162 212 248 270 318 345 408 440 530 592 670 723 870 935 1035
B 55 68 84 100 115 126 145 157 178 196 233 255 292 332 355 410 466
C 20 20 20 23 23 23 23 33 33 33 33 33 33 33 33 33 33
D 18 18 19 20 20 20 20 30 30 30 30 30 25 25 25 25 25
E 12 12 16 16 19 19 24 24 29 29 38 38 48 48 48 48 48
F 33 40.5 46 52 56 67 78 80 91 100 112 121 130 147 173 195 260
G 24 29 36 41.5 49 56 64 71 80 88 105 116 130 147 161 190 260
K 10 11 11 17 17 17 17 27 27 27 27 27 36 36 36 36 36
L 50 80 80 80 80 80 80 80 130 130 130 130 130 130 130 130 130
M 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30
N 4-M5×9 4-M5x9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9
。 50 50 50 70 70 102 102 102 125 140 140 140 165 165 165 254 254
P 4-M6×9 4-M6x9 4-M6x9 4-M8×12 4-M8×12 4-M10×15 4-M10×15 4-M10×15 4-M12×18 4-M16×24 4-M16×24 4-M16×24 4-M20×30 4-M20×30 4-M20×30 8-M16×24 8-M16×24
O1 36 36 36 50 50 70 70 70 102 102 125 125 — — — 165 165
P1 4-M5x8 4-M5x8 4-M5x8 4-M6×9 4-M6×9 4-M8×12 4-M8×12 4-M8×12 4-M10×15 4-M10×15 4-M12×18 4M12×18 — — — 4-M20×30 4-M20×30
Q 9 11 14 14 17 17 22 22 27 27 36 36 46 46 46 46 46
V 20 24 24 24 24 24 24 24 24 24 24 24 24 40 40 40 40
w 29 36 36 36 36 36 36 36 36 36 36 36 36 45 45 45 45
Y 4-M4×9 4-M5x9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M5×9 4-M6x10 4-M6×10 4-M6×10 4-M6×10
z G1/8″ G1/8″ G1/8″ G1/8″ G1/8″ G1/4″ G1/4″ G1/4″ G1/4″ G1/4″ G1/4° G1/4″ G1/4″ G3/8″ G1/2° G1/2″ G1/2″
Double Acting Output Torque(Nm)
执行器型号
Actuator Model		 2.5bar 3.0bar 3.5bar 4.0bar 4.5bar 5.0bar 5.5bar 6.0bar 7.0bar 8.0bar
AT042D 3.6 4.3 5 5.7 6.4 7.3 8 8.7 10 11.6
AT050D 8.3 10.0 11.6 13.3 15.0 16.6 18.3 19.9 23.3 26.6
AT063D 14.7 17.6 20.5 23.5 26.4 29.3 32.2 35.2 41.0 46.9
AT075D 29.1 34.9 40.7 46.5 52.3 58.2 64.0 69.8 81.4 93.0
AT088D 45.7 54.9 64.0 73.2 82.3 91.5 101 110 128 146
AT100D 66.5 79.7 93.0 106 120 133 146 160 186 213
AT115D 107 129 150 172 193 215 236 258 301 344
AT125D 138 166 194 221 249 277 304 332 387 443
AT145D 217 261 304 348 391 434 478 521 608 695
AT160D 283 340 397 453 510 567 623 680 793 907
AT190D 538 646 753 861 969 107 1185 1292 1508 1723
AT210D 658 789 920 1052 1184 1316 1447 1579 1842 2105
AT240D 966 1160 1352 1546 1740 1933 2126 2320 2706 3093
AT270D 1468 1761 2055 2349 2642 2936 3229 3523 4110 4697
AT300D 1908 2289 2670 3052 3434 3815 4197 4578 5341 6104
AT350D 2856 3427 3998 4570 5141 5712 6283 6854 7997 9139
AT400D 4069 4883 5697 6511 7325 8139 8953 9767 11394 13022
Single Action Output Torque(Spring Return)(Nm)
执行器
型号
Actuator
Model		 弹簧
数量
Spring
Quantity		 空气压力扭矩Air Pressure Torque
4.5Bar 5.0Bar 5.5Bar 6.0Bar 7.0Bar 8.0Bar 弹簧复位扭矩
Spring Return Torque
0°
开始
Start		 90°
结束
End		 0°
开始
Start		 90°
结束
End		 0°
开始
Start		 90°
结束
End		 0°
开始
Start		 90°
结束
End		 0°
开始
Start		 90°
结束
End		 0°
开始
Start		 90°
结束
End		 0°
开始
Start		 90°
结束
End
AT050S 10 8.2 5.2 9.8 6.9 11.5 8.5 13.2 10.2 16.5 13.5 19.8 16.8 9.7 6.8
AT063S 10 15.3 9.4 18.2 12.4 21.1 15.3 24.1 18.2 29.9 24.1 35.8 29.9 16.9 11.1
AT075S 10 30.2 17.7 36 23.5 41.8 29.3 47.6 35.1 59.2 46.7 70.9 58.4 34.6 22.1
AT088S 10 45.6 24.5 54.7 33.7 63.9 42.8 73 52 91.3 70.2 110 88.5 57.8 36.7
AT100S 10 68.9 40.7 82.2 54 95.5 67.3 109 80.5 135 107 162 134 78.8 50.6
AT115S 10 111 62.1 133 83.6 154 105 176 127 219 170 261 212 131 82
AT125S 10 144 84 172 112 200 140 227 167 283 223 338 327 165 105
AT145S 10 227 133 270 177 313 220 357 263 444 350 531 437 258 165
AT160S 10 286 178 343 235 399 291 456 348 569 461 683 575 332 224
AT190S 10 440 210 656 426 765 535 871 641 1087 857 1302 1072 586 379
AT210S 10 473 253 737 517 605 657 1000 780 1263 1043 1526 1306 719 521
AT240S 10 887 566 1066 745 1246 923 1423 1102 1781 1459 2138 1817 1042 721
AT270S 10 1472 982 1758 1281 2059 1567 2345 1868 2932 2455 3519 3042 1490 1060
AT300S 10 1814 1074 2193 1458 2577 1837 2956 2221 3719 2984 4482 3747 2122 1460
AT350S 10 2531 1361 3105 1929 3673 2503 4247 3071 5390 4212 6532 5356 3405 2346
AT400S 10 3833 3041 4640 2653 5461 4669 6268 4281 7895 5908 9523 7526 4115 2624

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