Dual-purpose Type Nozzle
A、Standard
SOLAS 1974, as amended
B、 Technical parameter
Nominal Diameter: 40mm、50mm、65mm
Material：Rubber
Working pressure range： 2-16Bar
Suitable medium：Water
C、Approved: CCS EC MED SOLAS
D、Introduction
When in use the discharge end of the hose will be fitted with a nozzle so that the operator may control the manner in which water is projected at a fire. Standard nozzle sizes are 12 mm, 16 mm and 19 mm.
Spray nozzles must be capable of producing a plain jet without spread and have a throw of at least 12 m. The spray must produce a reasonably fine spray which can form a curtain, from behind which it is possible to approach a fire. The spray pattern would have a diameter of, say, 5 m at a distance of 2 m from the nozzle.
E、Diffuser nozzle
A standard type of nozzle which by a twist-grip operation is able to shut off the hose discharge or deliver it as a jet or spray according to the operator’s desire. Some diffuser nozzles also have a water curtain capability.
F、Discharge rates
When large volumes of water are used for fire fighting consideration must be given to the stability of the vessel.
Pressure Drop Bar |
Discharge Rate at |
m3/hour= |
approx, tonnes/hour |
12 mm |
16 mm |
19 mm | |
| 2.1 | 9 | 14 | 20.5 |
| 2.5 | 10 | 15 | 22.5 |
| 2.7 | 10.5 | 16 | 23.5 |
| 3.1 | 11 | 17 | 25 |
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