📌 What is EN 15714-3?
EN 15714-3 is a European standard that defines the design, performance, and testing requirements for pneumatic part-turn actuators used with industrial valves. It ensures these actuators perform reliably in demanding process environments by setting uniform criteria for safety, functionality, and durability.
This standard is widely recognized in industries such as oil & gas, petrochemicals, water treatment, power generation, and manufacturing, where actuator reliability is critical
🔍 Scope of the Standard
EN 15714-3 applies to:
- Pneumatic part-turn actuators
- Both single-acting (spring return) and double-acting types
- Devices used in on/off, modulating, or safety-related applications
🧪 Key Requirements of EN 15714-3
✅ Performance Requirements
- Torque Output: Must match declared values across operating pressure range
- Fail-Safe Behavior: Must return to safe position on air failure (spring return types)
- Operating Time: Open/close stroke timing must meet specifications
- Position Indication: Visual or electronic feedback is required
- Ingress Protection (IP): Sealing must be validated (e.g., IP65/IP67 via IEC 60529)
✅ Testing Requirements
- Type Testing: Verifies the actuator’s functional behavior
- Pressure Testing: Confirms integrity of pressure-containing parts
- Environmental Resistance: Covers corrosion protection and IP sealing
🔗 Related Standards
EN 15714-3 often works in conjunction with other standards:
- ISO 5211: Mounting interface dimensions
- EN 12570: Pneumatic actuator pressure testing
- IEC 60529: IP rating classification
⚠️ EN 15714-3 vs SIL – Know the Difference
While EN 15714-3 ensures actuator performance and reliability, it does not address functional safety.
For safety-critical applications (such as Emergency Shutdown Valves), manufacturers may also seek SIL (Safety Integrity Level) certification per IEC 61508/61511, which evaluates actuator reliability in a Safety Instrumented System (SIS).
🏆 Why It Matters
Choosing or designing actuators in compliance with EN 15714-3 ensures:
- Product quality
- Compliance with EU requirements
- Confidence during FAT/SAT inspections
- Greater reliability in field operations
