Defined application


The FIREKILL™ Model N-pipes is a system of small dimension stainless steel pipe prepared for direct installation of low pressure watermist nozzles into the pipes in pre-fabricated installation threads. The design saves cost on fittings as well as reduces the risk of getting impurities into the pipe when installing the system. The design does also ensure correct installation spacings. The N-pipes are supplied in 6 meter length pipes and in different dimensions with blank ends prepared for press fittings. The N-pipes does come with different thread configurations for different applications.

Min working pressure

Acc to application

Max working pressure

16 Bar

Drop size

DV90 = 300 um

Design area

4 x 90 m2 or 1 x 360 m2

Kv Metric


Flow rate at min pressure

5.6 l/min

Nominal density

3.70 mm/m2


3.0 m between pipes



The VID Fire-Kill Model N-pipe Type 2V system has been designed with a modular approach in mind, which lowers the time required when designing and installing the system and makes it easier to incorporate into existing locations. To further ease installation, the systems utilize Model N-Pipe Type 2V of ordinarily 6 m in length. Each 6 m length of N-pipe is fitted with 12 low pressure fine water spray nozzles (Model BM-1-28 nozzles) designed specifically for the location size. Two nozzle pairs are installed for every meter in a 90° V-shape formation with 0.5 meters to each pipe end. Model N-pipe Type 2V systems are installed in parallel rows covering the entire enclosure, either in a total flooding design where all pipes are connected to the same riser pipe, or in zones where each zone of N-pipe Type 2V is connected to a zone deluge valve.


N-pipes Type 2V has been tested to an extensive list of different protocols. To proof its use as biomass storage area protection system, N-pipes Type 2V has been successfully tested to DFL test method 90329-3 with amendments 150225-2, both designed accordingly to EN 14972 annex A. Based on the testing the N-pipes Type 2V can protect dry or wet feedstock material typical with sizes less than 150mm in any dimension and stored in piles up to 8m height. The feedstock mainly consists of clean wood residues from forestry or other wood processing activities, including bark, chips, sawdust, and shavings; and recycled wood.