EN 14341 is the European standard specifying the design, manufacturing, material, testing and inspection requirements...
EN 1349 is the primary European standard for industrial process control valves. It specifies design, manufacturing, pressure-retaining, testing and performance requirements for valves used to control flow, pressure, temperature and level in industrial process systems.
What is EN 1349?
The standard applies to control valves used in process automation systems and establishes requirements for pressure integrity, materials, leakage performance, testing and operational characteristics.
EN 1349 is widely used in chemical plants, power generation facilities, steam systems, oil and gas installations, pharmaceutical production and food processing industries.
Scope of Application
- Globe Control Valves
- Angle Control Valves
- Three-Way Control Valves
- Pressure Reducing Valves
- Steam Conditioning Valves
- Temperature Control Valves
- Pneumatic Control Valves
- Electric Control Valves
Main Control Valve Components
| Component | Function |
|---|---|
| Body | Pressure-retaining valve body |
| Bonnet | Access cover for internal components |
| Plug | Flow regulating element |
| Seat Ring | Sealing surface |
| Stem | Motion transmission component |
| Actuator | Provides operating force |
| Positioner | Controls valve position accuracy |
Pressure Ratings
| Rating | Typical Application |
|---|---|
| PN16 | General Industrial Service |
| PN25 | Low Pressure Steam Systems |
| PN40 | Medium Pressure Processes |
| PN63 | High Pressure Industrial Service |
| PN100 | Critical Process Applications |
Valve Flow Characteristics
Linear
Flow changes proportionally with valve travel.
Equal Percentage
Equal increments of valve travel produce equal percentage changes in flow rate.
Quick Opening
Provides rapid flow increase during the initial opening movement.
Leakage Requirements
EN 1349 commonly references valve testing standards such as EN 12266 for pressure testing and leakage verification.
Common Materials
- EN-JS1049
- GP240GH
- 1.0619
- 1.4408
- 1.4308
- 1.4571
- ASTM A216 WCB
- ASTM A351 CF8M
Typical Industrial Applications
Steam Systems
Steam pressure, temperature and flow control.
Power Generation
Feedwater control valves, turbine bypass valves and desuperheating systems.
Chemical Industry
Control of critical process conditions.
Petrochemical Facilities
Control valves for high-pressure and high-temperature service.
Related Standards
| Standard | Scope |
|---|---|
| EN 1349 | Industrial Process Control Valves |
| IEC 60534 | Control Valve Sizing and Performance |
| EN 12516 | Valve Design Strength |
| EN 12266 | Valve Testing |
| ISO 5211 | Actuator Mounting Interface |
Frequently Asked Questions
What does EN 1349 cover?
Design, manufacturing and performance requirements for industrial process control valves.
Does it apply only to pneumatic actuators?
No. It applies to pneumatic, electric and hydraulic actuation systems.
Which standard is used for control valve sizing?
IEC 60534 is the primary standard for Cv/Kv calculations and sizing methods.
Conclusion
EN 1349 is the key European standard for industrial process control valves, providing requirements that support safe, reliable and efficient process automation across industrial sectors.