Solutions can be provided for hydraulic, pneumatic & electric actuators, of both linear as well as rotary types.
The following steps are followed as part of the Actuator selection process.
- Calculation of force requirements
- Selection of power source
- Selection of mechanism
- Sizing of actuator and components
- Selection of accessories
- Valve type and size
- Pressure drop
- Services and operating condition
- Flow medium
- Sealing
- Fire safety
- Fail safe operation
- Operating temperature
- Cyclic speed and rate
- Stem orientation
1. Product selection – Piston cylinder actuator
Valve input
Type, sub-type, size, rating, pressure class, shut-off class, plug type, packing, flow direction
Service input data
Fluid, Stroke, stroke time, required thrust, safety factor, design temperature & pressure, available air
Actuator input data
Type, sub-type, fail safe type, range & fail position
2. Product selection – electric actuator
Valve inputs: Type, pressure class, bore, no of start threads, flow direction
Service input data: Inlet pressure, inlet temperature, seat test pressure, mode of operation, Maximum Working Pressure
Output:
Recommended model of the Electric actuator with details such as stem diameter, Lift, no of turns, actuator thrust, etc.