Pneumatic actuators are actuators that use gas pressure to drive open and close and regulate valves. In general, pneumatic actuators are also equipped with auxiliary devices for use together. Commonly used are valve positioners and handwheel mechanisms. The role of the valve positioner is to use the feedback principle to improve the performance of the actuator so that the actuator can achieve accurate switching according to the controller’s control signal. The role of the handwheel mechanism is when the control system is due to power outages, gas outages, no controller output or actuator failure, the use of it can directly manipulate the control valve to maintain normal production and reduce the cost of downtime.
According to the stroke, the pneumatic actuator can be divided into quarter-turn type or linear operated type. In this article, we will have a brief introduction of components of COVNA pneumatic actuator. Hope it could help you know our quarter-turn actuator combined by what materials and if those are suitable for your project’s needs. Any demand for rack and pinion pneumatic actuators, feel free to consult us at sales@covnaactuator.com
The COVNA rack & pinion pneumatic actuator consists of 27 components:
No. | Description | Qty | Standard Material | Protection | Optional Material |
1 | Indicator Screw | 1 | Plastic | ||
2 | Indicator | 1 | Plastic | ||
3 | Spring Clip | 1 | Stainless Steel | ||
4 | Thrust Washer | 1 | Stainless Steel | ||
5 | Outside Washer | 1 | Engineering Plastics | ||
6 | Body | 1 | Extruded Alluminum Alloy | Hard Anodized etc | |
7 | Inside Washer | 1 | Engineering Plastics | ||
8 | Cam | 1 | Alloy Steel | ||
9 | O-ring(Pinion Top) | 1 | NBR | Viton/PTFE | |
10 | Bearing(Pinion Top) | 1 | Engineering Plastics | Stainless Steel | |
11 | Pinion | 1 | Alloy Steel | Nickel Plated | |
12 | O-ring(Pinion Bottom) | 1 | Engineering Plastics | ||
13 | Bearing(Pinion Bottom) | 1 | NBR | Viton/PTFE | |
14 | Plug | 2 | NBR | Viton/PTFE | |
15 | O-ring(Adjust Screw) | 2 | NBR | Viton/PTFE | |
16 | Nut(Adjust Screw) | 2 | Stainless Steel | ||
17 | Adjust Screw | 2 | Stainless Steel | ||
18 | Piston | 2 | Cast Aluminum/Casting | Anodized/Zinc Gaslvanized | Stainless |