VPORTA / PROCESS VALVE SYSTEMS
Pneumatic vs electric valve actuation
Compare utilities, failure response, positioning duty and maintenance. Select the actuator and valve together.
| Decision point | Pneumatic | Electric |
|---|---|---|
| Energy supply | Instrument air plus electrical controls where used | Electrical power and control interface |
| Failure response | Spring return or engineered air-reserve arrangement | Stored-energy option needed for powered fail-safe travel |
| Modulating suitability | Positioner and properly sized air system | Actuator duty class and control performance must be suitable |
| Travel speed | Air path, actuator and controls dependent | Motor, gearing and actuator design dependent |
| Maintenance | Air quality, seals, tubing and accessories | Gearing, motor, electronics and sealing |
| Key RFQ input | Minimum available air pressure | Voltage, phase, frequency and duty cycle |
What changes the decision?
Neither technology is universally faster, more accurate or safer. Specify the required performance and compare the assembled systems against it.
Compare offers on the same basis
- Use identical medium composition, flow cases, pressures and temperatures.
- State the same leakage test, failure response and accessory scope.
- Compare expected maintenance and spare parts alongside the purchase price.
- Request drawings and technical deviations before accepting an alternative.
Not sure which valve fits?
Tell us what the valve needs to do. Include whether the duty requires modulation or isolation only.