Fire extinguishing nozzle selection table

The table below summarises much of the information in the fire extinguishing nozzle section of the SNP website.  It is intended to be a handy reference guide to aid nozzle selection.  Full data on each of the nozzles listed can be accessed by clicking on the boxes in the left hand column of the table below.  The data sheets will open in a separate tab to allow easy comparisons between multiple product sheets.

Nozzle Type

Design Type

Spray Characteristics

Fire Extinguishing uses

Flow rates

Notes

Fire fighting spiral nozzle

Spiral

Fine droplets mixed with some heavier droplets

Full cone pattern

Sprinkling/ deluge

9.67-1720

Protective sheath

Lloyds, FM and UL       approved

Ultra wide angle spiral nozzle

Spiral

Fine droplets mixed with some heavier droplets

Full cone pattern

Very wide 180 degree spray angle

Sprinkling/ deluge

12.3-255

Very wide spray angle reduces the number of nozzles needed.

PJ series Low profile misting nozzle

Impingement mist nozzle

Fog pattern

Very fine droplets

Misting / halon replacement

0.043-5.34

Can operate effectively at 2 BAR fluid pressure.

Microwhirl misting nozzle

Small orifice

Fog pattern

Very fine droplets

Low flow rate

Misting / halon replacement

0.032-0.517

Drip free

Requires minimum of 7 BAR

MHW multi headed misting nozzle

Multiple small orifice

Fog pattern very fine droplets

Misting / halon replacement

4.2-8.7

Drip free

Manifold

 with multiple Microwhirl nozzles

Minimum of 70BAR pressure.

nozzle catalogue

Fire Extinguishing Engineering Considerations:

Fire Extinguishing Nozzle Designs:

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