EN 14341 is the European standard specifying the design, manufacturing, material, testing and inspection requirements...
EN 13709 is the primary European standard covering steel globe valves and globe stop-check valves used in industrial process systems, steam networks, power generation facilities, chemical plants and petrochemical installations.
The standard specifies requirements for design, materials, dimensions, testing and operational performance of wrought, cast or fabricated steel valves in straight, angle and oblique pattern configurations.
What is EN 13709?
EN 13709 defines technical requirements for steel globe and globe stop-check valves with flanged, butt welding, socket welding and threaded end connections. The standard is primarily intended for industrial and general-purpose applications.
Valve Types Covered
- Straight Pattern Globe Valves
- Angle Pattern Globe Valves
- Oblique Pattern (Y-Type) Globe Valves
- Globe Stop-Check Valves
- Bellows Seal Globe Valves
- Pressure Seal Globe Valves
Operating Principle of Globe Valves
Globe valves use a movable disc or plug that travels perpendicular to the seat. This design provides accurate throttling capability and reliable shut-off performance.
Operating Principle of Globe Stop-Check Valves
Globe stop-check valves combine shut-off and non-return functions. When opened, they operate as check valves, while full stem closure provides positive isolation.
Body Configurations
| Pattern | Description |
|---|---|
| Straight Pattern | Straight flow path arrangement |
| Angle Pattern | 90-degree flow direction change |
| Oblique Pattern (Y-Type) | Reduced pressure drop design |
Typical Body Materials
| Material | Typical Grade |
|---|---|
| Carbon Steel Castings | 1.0619 / GP240GH |
| Stainless Steel Castings | 1.4308 |
| Stainless Steel Castings | 1.4408 |
| Chrome-Moly Steel | 13CrMo4-5 |
| Chrome-Moly Steel | 10CrMo9-10 |
End Connections
- Flanged
- Butt Weld
- Socket Weld
- Threaded
Size Range
The standard covers nominal sizes ranging from DN 8 to DN 400 depending on connection type and pressure rating.
Pressure Ratings
| Designation | Typical Ratings |
|---|---|
| PN | PN10 to PN100 |
| ASME Class | Class 150, 300, 600 |
| Socket Weld / Threaded | Class 600, Class 800 |
Design Requirements
- Pressure-retaining body strength
- Stem strength verification
- Seat sealing integrity
- Operational torque verification
- PED compliance support
- High-temperature service capability
Inspection and Testing
EN 13709 valves are commonly tested according to EN 12266 for pressure integrity and leakage verification.
- Shell Strength Test
- Seat Leakage Test
- Operational Test
- Visual Inspection
- Dimensional Verification
Typical Industrial Applications
Steam Systems
Steam isolation and throttling service.
Power Generation Plants
Main steam lines, feedwater systems and auxiliary services.
Chemical Industry
Isolation and regulation of process fluids.
Petrochemical Facilities
High-pressure and high-temperature process applications.
Related Standards
| Standard | Scope |
|---|---|
| EN 13709 | Steel Globe Valves |
| EN 12266 | Valve Testing |
| EN 12516 | Valve Design Strength |
| EN 558 | Face-to-Face Dimensions |
| PED 2014/68/EU | Pressure Equipment |
Conclusion
EN 13709 is the primary European standard for steel globe valves and globe stop-check valves. Through standardized requirements for design, materials and testing, it supports safe and reliable operation in steam, power, chemical and petrochemical applications.