DN Series Fittings

"Diameter Nominal" (DN) is a designation of a pipe size. DN followed by a number denotes the size of a pipe (approximately, its inside diameter) in millimetres (mm).

The terms nominal bore (NB) and DN are used interchangeably with NPS "Nominal Pipe Size". DN is the European equivalent of NPS but shows pipe sizes differently than NPS. A 2-inch pipe may simply be referred to as DN 50 and to convert NPS to DN it has to be multiplied by 25.

Currie & Warner manufactures a variety components for DN fittings. Below you can see some of the components we supply.