Project Description

RRZ

FULL CONE NOZZLE

FIREFIGHTING NOZZLE

Flow Rate

0
@3bar
0
@5bar
0
@40psi
0
@70psi

Materials

Main material:
AISI 316L s.s.

More materials on request

Thread specification

.
Female 1/2″ BSP
.

RRZ

FULL CONE NOZZLE

FIREFIGHTING NOZZLE

Flow Rate

0
@3bar
0
@5bar
0
@40psi
0
@70psi

Materials

Main material:
AISI 316L s.s.

More materials on request

Thread specification

.
Female 1/2″ BSP
.

RRZ

FULL CONE NOZZLE

FIREFIGHTING NOZZLE

Flow Rate

0
@3bar
0
@5bar
0
@40psi
0
@70psi

Materials

Main material: AISI 316L s.s.

More materials on request

Thread specification

Female 1/2″ BSP

RRZ FIREFIGHTING NOZZLE – TURBINE FOR HIGHWAY TUNNELS FIRE PROTECTION

The new RRZ firefighting nozzle generates an atomized water cone with a large ground cover. This device works with a multi-orifice head connected to a shaft, driven to rotation by a hydraulic turbine. The operating principle is very simple. A suitably sized impeller has the task of transforming the tangential thrust of a water jet into torque applied to a shaft. The delivery fluid is therefore sufficient to actuate the turbine operation, which takes advantage of the pressurized water either to rotate and to generate the spray of the multi-orifice head. The high rotation makes simple dart throws recreate a discreetly atomized water cloud, uniformly distributed over a perfect circumference. The simple construction architecture makes it an easy and fast product in all installation and maintenance operations.

The multi-orifice head is able to achieve an instant 180° spray angle that quickly converts into a full-size, with a quality of atomized spray increasing when pressure increases. At low pressures (from 1 to 2 bar), a wider wetting radius is achieved, up to 6 m., while maintaining a rather coarse drop diameter. At higher pressures (around 5 bar), atomization is favored by a considerable reduction in drop diameter, which creates a very fine rain effect on the ground.

CLJet deflection angledegDULiquid outlet diammRFFemale threadinch
DConventional orifice diammFFFlange outer diammRGMale threadinch
D1Smallest free inside diammGFlange center-hole diammSQSquare bar sizemm
DELiquid inlet diammH,H1HeightmmWWeightgr, kg
DFFlange sizeinchL,L1LengthmmWSWrench sizemm
DIAOutside diametermmNRNumber of orifices
DNFlange nominal sizemmQCQuickfit connection


The video shows a test performed at a feed pressure value of 5 bar and the nozzle installed at a height of 2 meters.

The graphs show the flow rate as a function of the pressure, and the wetting radius as a function of the height.

 

The European Commission, as the institution managing Horizon 2020, the EU Framework Programme for Research and Innovation 2014-2020, has delivered to PNR Italia the “seal of excellence” for the following project: optimization, operational environment testing and approval for use of nozzle RRZ in highway tunnels as an active firefighting system.

This is a great recognition for PNR Italia, which sees its efforts rewarded for introducing new and innovative technological solutions to the market, as the result of continuous company development and our fifty-year history.

+39 0383 344611

RRZ
Full Cone Nozzle – Firefighting Nozzle

www.pnr.eu
info@pnr.it
+39 0383 344611

RRZ FIREFIGHTING NOZZLE – TURBINE FOR HIGHWAY TUNNELS FIRE PROTECTION

The new RRZ firefighting nozzle generates an atomized water cone with a large ground cover. This device works with a multi-orifice head connected to a shaft, driven to rotation by a hydraulic turbine. The operating principle is very simple. A suitably sized impeller has the task of transforming the tangential thrust of a water jet into torque applied to a shaft. The delivery fluid is therefore sufficient to actuate the turbine operation, which takes advantage of the pressurized water either to rotate and to generate the spray of the multi-orifice head. The high rotation makes simple dart throws recreate a discreetly atomized water cloud, uniformly distributed over a perfect circumference. The simple construction architecture makes it an easy and fast product in all installation and maintenance operations.

The multi-orifice head is able to achieve an instant 180° spray angle that quickly converts into a full-size, with a quality of atomized spray increasing when pressure increases. At low pressures (from 1 to 2 bar), a wider wetting radius is achieved, up to 6 m., while maintaining a rather coarse drop diameter. At higher pressures (around 5 bar), atomization is favored by a considerable reduction in drop diameter, which creates a very fine rain effect on the ground.

Main material
AISI 316L s.s.

Thread specification
Female 1/2″ BSP

PNR Italia 27058 Voghera (PV) Italy – Via Gandini 2
Phone: +39 0383 344611 Fax: +39 0383 212489 E-mail: info@pnr.it