PN16 PN25 Flange – European Pressure Rating
PN16 and PN25 flanges are common pressure ratings in European DIN/EN standards. PN stands for Pressure Nominal, indicating the maximum working pressure in bar.
PN Rating System
- PN6: 6 bar working pressure
- PN10: 10 bar (common for water)
- PN16: 16 bar (general industrial)
- PN25: 25 bar (higher pressure)
- PN40: 40 bar (high pressure)
- PN64/100: 64-100 bar (special applications)
DIN Standards
- DIN 2501: Bolted flange connections
- DIN 2527: Blind flanges
- DIN 2573: Weld neck flanges
- EN 1092-1: Current European standard
Applications
- PN10/16: Water treatment, HVAC, food industry
- PN25/40: Chemical plants, steam systems
- PN64+: High-pressure hydraulic systems
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