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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