N - Full cone spray nozzle for offshore fire protection

N full cone nozzle is designed specifically with critical fire and explosion suppression applications in mind. The N nozzle creates fine atomisation and a large surface area of the spray, which improves evaporation and cooling.

Nozzle sizes N1 - N3W are supplied with an integrated 24 mesh strainer in 316SS. All nozzles have Factory Mutual, Lloyd's Register and UL Approval certifications. N3 - N5W also have U.S. Coast Guard Approval.

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The N full-console nozzle is specially designed for various critical firefighting applications. N is a spiral nozzle that provides a spray with fine atomisation, promoting evaporation and cooling. The N nozzle is supplied with an integrated filter and an optional nozzle cover.
FM Approved
The UL Approval logo
The Lloyd's Register Approval logo.
Illustration of how the spray is created by a spiral nozzle with full-cone spray. The spray pattern is created by the liquid cutting along the spiral, forming several concentric cones. The cones form 2 to 3 rings of relatively large droplets, surrounded by wider bands of relatively small droplets.
The N full-console nozzle is specially designed for various critical firefighting applications. N is a spiral nozzle that provides a spray with fine atomisation, promoting evaporation and cooling. The N nozzle is supplied with an integrated filter and an optional nozzle cover. FM Approved The UL Approval logo The Lloyd's Register Approval logo. Illustration of how the spray is created by a spiral nozzle with full-cone spray. The spray pattern is created by the liquid cutting along the spiral, forming several concentric cones. The cones form 2 to 3 rings of relatively large droplets, surrounded by wider bands of relatively small droplets.

Design features

  • Fine atomisation
  • The large surface area of spray improves evaporation and cooling
  • Large free passage
  • All N1-N3W nozzles are provided with an integral strainer
  • Optional protective cover. See Datasheet regarding requirements for use of protective cover.
  • Certifications: Factory Mutual, UL Approval, Lloyd's Register, N3-N5W: U.S. Coast Guard Approved
Spray patternSpiral nozzle - Full cone
Spray angle90°, 120°
Flow rate11.4 - 2260 l/min
Material - StandardBrass, 316
Material - OtherSee Datasheet
Connection1/2", 1", 1 1/2" BSP/NPT
Filter316, 24 mesh
DimensionsSee Datasheet

Flow rates, spray angles & connections

If a specific pressure is not listed below or in the nozzle datasheet, it is possible to calculate the nozzle flow rate at a given pressure by using the equation at the bottom of the datasheet.

Flow rate (l/min) @ Differential pressure (bar), Density (1 SG)
Nozzle numberConnectionSpray angle0.7 bar1 bar3 bar5 bar7 bar10 bar
N11/2"90°, 120°11,513,723,730,636,243,3
N21/2"90°, 120°20,224,241,954,164,076,5
N31/2"90°, 120°31,537,665,184,199,5119
N41/2"90°, 120°45,954,995,1123145174
N51/2"90°, 120°63,075,3130168199238
N61/2", 1"90°, 120°80,195,7166214253303
N71"90°, 120°128153265342405484
N81 1/2"90°, 120°181216374483571683
N91 1/2"90°, 120°246294509657778930
N101 1/2"90°, 120°32238566786110201220
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Datasheet N Datasheet N FM Approved BETE Catalogue Metric

Choose the right spray nozzle for an optimised spray process

Each type of nozzle has a specific flow rate, spray pattern and droplet size. To optimise the spray process, it is important to understand how different parameters affect the choice of spray nozzle and type of solution.

The Knowledge base contains information about spray pattern, droplet size, flow rate/pressure, spray coverage, materials, etc. The 'Materials' section of the Knowledge base lists the most commonly requested materials and maximum temperature of the material.

To the knowledge base Spray nozzles & systems

Our main supplier is BETE, a leading manufacturer of spray nozzles and spray systems with more than 70 years of experience in spray processes and a product range including over 20,000 components.

BETE's spray technology is used worldwide to optimise processes in many different industries, including the energy sector, chemical and petrochemical industry, food industry and offshore.

Some of BETE's certifications include ISO 9001:2015, ATEX and FM Approval.

BETE Performance Spray Engineering

BETE offers test facilities, CFD modelling, and advanced technical support. To ensure high quality and reliable deliveries, BETE's manufacturing is largely based 'in-house' with its own foundry, CNC machining, assembly and quality control.

BETE Certifications & Approvals

Click the button below for a full list of BETE's certifications. It is also possible to download some certificates.

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