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Rotary pneumatic actuator for shut-off valves SC-RAT/RST105-DA
Do you have any questions about the product?
We will be happy to answer them in messengers
≈ 250 UAH / Free for orders over 5,000 UAH
≈ 350 UAH / Free for orders over 5,000 UAH
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Rotary pneumatic actuator for shut-off valves SC-RAT/RST105-DA

Rotary pneumatic actuator for shut-off valves SC-RAT/RST105-DA
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Technical specifications
Description
Pneumatic rotary actuator for shut-off valves SC-RAT/RST105-DA type 105 has a rotation 90 or 180° and torque up to 271.52 Nm (at pressure 8 bar). This is a reliable pneumatic actuator designed for installation on large ball valves and butterfly valves, with a standard mounting platform F07/F10 according to standard ISO 5211/DIN3337. When ordering, you must choose the mode of action:
- SC-RAT105-DA — double-acting pneumatic actuator. It should be equipped with a Namur standard distributor 5/2 with a thread size of 1/4″ at the pneumo distributor output;
- SC-RST105-DA — single-acting pneumatic actuator with forced spring return to the closed/open position in case of air pressure drop. The turning force depends on the number of springs (from 5 to 12). Both 3/2 and 5/2 distributors can be used for control. We recommend supplying air to both outputs using the 5/2 design.
Horizontal pneumatic actuator 105 SC-RAT/RST105-DA
The body of air actuators Specialist is made of extruded aluminium with deep anodising of the inner and outer surface.
Structurally, it is a rack and pinion pneumatic cylinder with a quarter turn 90±4° for ball valves or 180±4°. It can be equipped with NAMUR standard pneumatic distributors, positioners, limit switch blocks.
Torque of double-acting pneumatic actuator 105 SC-RAT105-DA
| Pressure, Bar | ||||||
|---|---|---|---|---|---|---|
| 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 67.88 | 101.82 | 136.76 | 169.7 | 203.64 | 237.58 | 271.52 |
Torque of single-acting pneumatic actuator 105 SC-RST105-DA

| Pressure, Bar | 3 | 4 | 5 | 6 | 7 | Spring torque | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of springs | 0° | 90° | 0° | 90° | 0° | 90° | 0° | 90° | 0° | 90° | 0° | 90° |
| 5 | 68.6 | 52 | 103.6 | 87 | - | - | - | - | - | - | 33.2 | 49.8 |
| 6 | 61.9 | 42 | 96.9 | 77 | - | - | - | - | - | - | 39.9 | 59.8 |
| 7 | 55.3 | 32.1 | 90.3 | 67.1 | - | - | - | - | - | - | 46.5 | 69.7 |
| 8 | - | - | 83.7 | 57.1 | 116.6 | 90 | - | - | - | - | 53.1 | 79.7 |
| 9 | - | - | 77 | 47.4 | 109.9 | 80.3 | - | - | - | - | 59.8 | 89.4 |
| 10 | - | - | 70.4 | 37.2 | 103.3 | 70.1 | 137.3 | 104 | 171.2 | 136 | 66.4 | 99.6 |
| 11 | - | - | - | - | 96.7 | 60.1 | 130.6 | 94 | 164.6 | 128 | 73 | 109.6 |
| 12 | - | - | - | - | 90 | 50.2 | 123.9 | 64.1 | 157.9 | 118.1 | 79.7 | 119.5 |
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