EN 1092-1 · P250GH / S235JR · stock and made to order
DN20 PN25 Blind (type 05) Flange — EN 1092-1
DN20 PN25 blind flange to EN 1092-1, machined from P250GH / S235JR. Outside diameter 105 mm, thickness 18 mm, 4 bolt holes on a 75 mm circle, approximate weight 1.1 kg. Available with raised face, flat face or the facing specified on your drawing.
Size
DN20
Standard
EN 1092-1 (EN 1092-1:2018)
Pressure rating
PN25
Outside diameter
105 mm
Thickness
18 mm
Bolt circle
75 mm
Approx. weight
1.1 kg
Full dimensions — DN20 PN25
| Size | DN | OD | Thickness | RF Ø | Bolt circle | Bolts | Weight | |
|---|---|---|---|---|---|---|---|---|
| DN10 | 10 | 90 mm | 16 mm | 40 mm | 60 mm | 4 × Ø14 mm | — | Details → |
| DN15 | 15 | 95 mm | 16 mm | 45 mm | 65 mm | 4 × Ø14 mm | 0.8 kg | Details → |
| DN20 (this size) | 20 | 105 mm | 18 mm | 58 mm | 75 mm | 4 × Ø14 mm | 1.1 kg | Details → |
| DN25 | 25 | 115 mm | 18 mm | 68 mm | 85 mm | 4 × Ø14 mm | 1.4 kg | Details → |
| DN32 | 32 | 140 mm | 18 mm | 78 mm | 100 mm | 4 × Ø18 mm | 2 kg | Details → |
| DN40 | 40 | 150 mm | 18 mm | 88 mm | 110 mm | 4 × Ø18 mm | 2.4 kg | Details → |
| DN50 | 50 | 165 mm | 20 mm | 102 mm | 125 mm | 4 × Ø18 mm | 3.2 kg | Details → |
| DN65 | 65 | 185 mm | 22 mm | 122 mm | 145 mm | 8 × Ø18 mm | 4.3 kg | Details → |
| DN80 | 80 | 200 mm | 24 mm | 138 mm | 160 mm | 8 × Ø18 mm | 5.5 kg | Details → |
| DN100 | 100 | 235 mm | 24 mm | 162 mm | 190 mm | 8 × Ø22 mm | 7.6 kg | Details → |
| DN125 | 125 | 270 mm | 26 mm | 188 mm | 220 mm | 8 × Ø26 mm | 10.8 kg | Details → |
| DN150 | 150 | 300 mm | 28 mm | 218 mm | 250 mm | 8 × Ø26 mm | 14.6 kg | Details → |
| DN200 | 200 | 360 mm | 30 mm | 278 mm | 310 mm | 12 × Ø26 mm | 22.5 kg | Details → |
| DN250 | 250 | 425 mm | 32 mm | 335 mm | 370 mm | 12 × Ø30 mm | 33.5 kg | Details → |
| DN300 | 300 | 485 mm | 34 mm | 395 mm | 430 mm | 16 × Ø30 mm | 46.3 kg | Details → |
| DN350 | 350 | 555 mm | 38 mm | 450 mm | 490 mm | 16 × Ø33 mm | 68.1 kg | Details → |
| DN400 | 400 | 620 mm | 40 mm | 505 mm | 550 mm | 16 × Ø36 mm | 89.7 kg | Details → |
| DN450 | 450 | 670 mm | 46 mm | 555 mm | 600 mm | 20 × Ø36 mm | — | Details → |
| DN500 | 500 | 730 mm | 51 mm | 615 mm | 660 mm | 20 × Ø36 mm | 159 kg | Details → |
| DN600 | 600 | 845 mm | 66 mm | 720 mm | 770 mm | 20 × Ø39 mm | 278 kg | Details → |
Published EN 1092-1 dimensions for every PN25 size in this product family.
Dimensions in millimetres. Bolt hole diameter applies to through-holes. For stud length, gasket and bolting selection, match the gasket and bolts to EN 1092-1.
What PN25 means in service
PN25 is a nominal pressure of 25 bar (2.5 MPa) at ambient temperature for EN material group 1, derating with temperature per EN 1092-1.
EN 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.
Facing and materials
Raised face (RF) with a 2 mm face height is standard; flat face (FF) and groove (tongue) facings are available.
- P250GH
- P265GH
- S235JR
- S355J2
- 1.4301 / 1.4404
- 1.4571
Other grades, impact-tested heats and NACE MR0175 requirements are quoted on request. Material certificates to EN 10204 3.1 are issued against the same heat number as the dimensional report.
Inspection and delivery
- Dimensional inspection against the EN 1092-1 table for DN20 PN25
- Heat number stamped on the rim; EN 10204 3.1 certificate issued
- PMI on stainless and alloy heats; UT/RT on request
- Anti-rust oil, plywood case or pallet, with packing list and MTC
- Typical lead time 7–15 days for carbon steel stock sizes, 20–30 days for alloys
Other sizes in PN25
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DN20 PN25 Blind (type 05) Flange
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