DIN / EN Valves
DIN / EN check valves are swing and lift non-return valves that match existing lines one-for-one in plants engineered to European standards. With EN 558 face-to-face dimensions and EN 1092-1 flanges, they allow direct replacement.
Overview
Swing types offer low pressure drop; lift types offer tight sealing and good performance on steam lines. Tests are carried out to EN 12266-1, and certificates are issued with EN material numbers.
Technical specifications
| Type | Swing, lift |
|---|---|
| Pressure rating | PN16, PN25, PN40, PN64 |
| End connections | EN 1092-1 flanged, EN 558 face-to-face |
| Materials | 1.0619, 1.7357, 1.4408 and other EN materials |
| Testing | EN 12266-1 |
Key features
- One-for-one replacement in DIN lines
- Swing and lift options
- Certificates with EN material numbers
Standards and test pressures
- Design: EN 16767 (steel check valves); lift type with DIN 3356 / EN 13709 body construction
- Face-to-face: DIN 3202 / EN 558
- Flanges: EN 1092-1 (DIN 2543–2547)
- Testing: EN 12266-1 (DIN 3230)
Under EN 12266-1, the hydrostatic shell test is carried out at 1.5 times the valve’s allowable pressure (PS) at 20 °C and the seat test at 1.1 times PS. The values below apply to material groups in which PS equals PN:
| Nominal pressure | Shell test | Seat test |
|---|---|---|
| PN 16 | 2.4 MPa (24 bar) | 1.76 MPa (17.6 bar) |
| PN 25 | 3.75 MPa (37.5 bar) | 2.75 MPa (27.5 bar) |
| PN 40 | 6.0 MPa (60 bar) | 4.4 MPa (44 bar) |
| PN 64 | 9.6 MPa (96 bar) | 7.04 MPa (70.4 bar) |
Documentation and testing
On industrial projects the documentation package matters as much as the valve. We confirm the certificate and test scope for every line item at quotation stage:
- EN 10204 3.1 material certificates for pressure-retaining and wetted parts, traceable by heat number
- EN 10204 3.2 with third-party inspection, on request
- Pressure test reports to API 598 or EN 12266-1: shell, seat and, where specified, gas tests
- Fire-test certificates (API 607 / ISO 10497) for fire-safe type-tested designs
- PMI reports for alloy and stainless materials
- Dimensional, visual and coating inspection records
- PED 2014/68/EU CE declaration for equipment within its scope
- NACE MR0175 / ISO 15156 compliance statement for sour (H₂S) service
Technical datasheet
Frequently Asked Questions
What should be considered when selecting a DIN check valve?
The PN rating and EN 558 face-to-face series of the existing line, the correct size for the flow velocity, the installation orientation (horizontal or vertical), and material suitability for high-temperature services such as steam.
Related products
DIN / EN Flanged Ball Valve
EN 1092-1 flanged, PN16–PN100; floating and trunnion mounted designs.
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DIN / EN Gate Valve
EN 1092-1 flanged, PN16–PN64; handwheel or electric actuator.
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DIN / EN Globe Valve
DIN 3356 / EN 13709, PN16–PN64; steam and hot water lines.
View detailsRequest a quote: DIN / EN Check Valve
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