Description
Pneumatic valve actuator is an executive device that uses air pressure to open and close ball valve, butterfly or regulating valve. The pneumatic actuator is easy to repair and maintain, and has good adaptability to the environment.
Specifiation
- Model: ATO-AT270D
- Bore Size: 270mm (10.63 inch)
- Air Supply Port: 1/2 inch
- Power Source: Compressed Air
- Actuator Type: Double Acting
- Air Pressure: 2.5bar ~ 8bar
- Max Working Pressure: 10bar
- Operating Temperature (Optional): -20℃ ~ 80℃, -35℃ ~ 80℃, -20℃ ~ 150℃
- Rotation Angle: 90°±5%
- Body Material: Aluminum Alloy
- Life Time: One Million Time
Dimensions
ATO-AT270D
| Q | A | B | C | D | E | F | G | H | I |
| Φ165 | 730mm | 294mm | 147mm | 147mm | 372mm | 332mm | 30mm | 130mm | PF |
| J | K | O | P | S | T | U | V | W | X |
| M6 | 1/2″ | 90mm | 62mm | 4mm | 4mm | 20mm | 40mm | 22.5mm | 45mm |
Details
| PN | Number | Name | Standard Material |
| 1 | 4 | Position Indicator | Polypropylene+GF |
| 2 | 1 | Position Indicator Seat | Polypropylene+GF |
| 3 | 1 | Snap Ring | Stainless Steel |
| 4 | 1 | Bearing | Stainless Steel |
| 5 | 1 | Bearing | Polyphthalamide |
| 6 | 1 | Bore Body | Extruded Aluminum alloy |
| 7 | 2 | Bearing | Polyphthalamide |
| 8 | 2 | Piston | Die Cast Aluminum |
| 9 | 2 | O-Ring | Nitrile(NBR70) |
| 10 | 2 | Bearing | Polyphthalamide |
| 11 | 8 | End Cover bolt gasket | Stainless Steel |
| 12 | 2 | End Cover bolt | Stainless Steel |
| 13 | 2 | Left and Right end Cover | Die Cast Aluminum |
| 14 | 2 | O-Ring | Nitrile(NBR70) |
| 15 | 2 | Guide Sleeve | Polypropylene+GF |
| 16 | 1 | O-Ring | Nitrile(NBR70) |
| 17 | 1 | Bearing | Nylon46 |
| 18 | 1 | Bearing | Polyphthalamide |
| 19 | 1 | Cam Switch | Stainless Steel |
| 20 | 1 | Actuating Shaft | Steel alloy |
| 21 | 1 | Bearing | Nylon46 |
| 22 | 1 | O-Ring | Nitrile(NBR70) |
| 23 | 1 | O-Ring | Nitrile(NBR70) |
| 24 | 2 | Spacer for Limit Bolt | Stainless Steel |
| 25 | 2 | Limit Nut | Stainless Steel |
| 26 | 2 | Limit Bolt | Stainless Steel |
| 27 | min.5/max.12 | Spring | High alloy Spring Steel |
| 28 | 1 | Spring Seat | Polypropylene+GF |
Tips: How to maintain a pneumatic valve actuator?
- The purpose of using and maintaining the pneumatic valve actuator is to prolong the service life of the valve and ensure reliable opening and closing.
- The stem thread often rubs against the stem nut, and should be lubricated with a little yellow dry oil, molybdenum disulfide or graphite powder.
- For valves that are not frequently opened and closed, the handwheel should also be rotated regularly, and lubricant should be added to the valve stem threads to prevent sticking.
- For outdoor valves, the valve stem should be protected against rain, snow, dust and rust.
- If the valve is mechanically in standby, add lubricating oil to the gearbox on time.
- Always keep the valve clean.
- Frequently inspect and maintain the integrity of other valve components. If the handwheel fixing nut falls off, it should be completely matched and cannot be used, otherwise the four sides of the upper part of the valve stem will become rounded, and the cooperation reliability will be gradually lost, or even unable to start.
- Do not rely on the valve to support other heavy objects, and do not stand on the valve.
- The valve stem, especially the threaded part, should be wiped frequently, and the lubricant contaminated by dust should be replaced with a new one, because the dust contains hard debris, which is easy to wear the thread and the surface of the valve stem, which affects the service life.
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