SPECIFICATION · #787
EN 1092-1 PN25 DN80 Weld Neck
EN 1092-1 · EN 1092-1:2018 · DN80
Dimension drawing
Schematic, drawn from the table valuesD outside diameter · K bolt circle · n×Ød bolt holes · C thickness · D2 raised face · f raised-face height · A hub diameter · H length
Dimensions
EN 1092-1 · PN25| DOutside diameter | 200mm |
|---|---|
| CFlange thickness / blind thickness | 24mm |
| D2Raised face diameter | 138mm |
| fRaised face height | 2mm |
| KBolt circle diameter | 160mm |
| nNumber of bolt holes | 8pcs |
| dBolt hole diameter | 18mm |
| AHub diameter | 105mm |
| HHub length / overall length | 58mm |
| BWelding-end diameter | 88.9mm |
| Approximate weight | 4.8kg |
Pressure–temperature ratings
Group 3E0Current material group: Group 3E0
Source: Tables G.2 to G.13 (pp. 113–124) — group 3E0 / P245GH (1.0352), vR ≤ 50 mm, all PN
Values are PS in bar gauge for material group 3E0, thickness band vR ≤ 50 mm, taken from the 3E0 row of each PN table. Decimal commas as printed. The 450 °C row is creep-based in the standard (italic) and is the last rated temperature for this group. A separate row for the 50 < vR ≤ 150 mm band is printed in each table and is slightly lower at some temperatures.
Material & standard
EN 1092-1EN 1092-1 uses PN (nominal pressure) ratings in bar: PN6, PN10, PN16, PN25 and PN40. PN16 means 16 bar nominal at ambient temperature for EN material group 1, derating with temperature per the EN 1092-1 tables. EN PN ratings are not equivalent to ASME classes in dimensions, even where the pressure looks similar.
RELATED
Related specifications
Data note
Specification #787 · last updated 2026-11-05 08:05
Use limits
This library is a factual compilation of published standards tables. It does not replace the standard text. Verify against the edition in your purchase specification before quoting, manufacturing or inspecting a critical part.