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Flow per nozzle (m
Action radius of nozzle (m)
Outlet surface area (mm2)
Once you know the flow required, you must find out the pressure drop. The pressure drop of the nozzles and
distributor valve can be found in Fig. 4.
These 2 parameters, required flow and pressure, are sufficient to search for the correct pump in a graph or table.
The final result should meet the working specifications of the valve indicated in the following table.
Flow (m
Inside valve pressure (bars)
For general use, in 2-nozzle branches, place outlet S3 with a total flow of 10m3/h and in 3-nozzle branches, place
outlet S3 with a total flow of 15m3/h.
Details of pressure drops of the installation:
Nozzles
Configuration
per
of nozzle
branch
outlet
2
S3
3
S3
* Guidance values. Use as an example only for simple installation pools and with a distributor valve near the pool.
It is recommended to calculate this value in each installation.
Summary table to choose the pump:
Nozzles per branch
* Guidance values. Use as an example only for simple installation pools and with a distributor valve near the pool.
It is recommended to calculate this value in each installation.
3.2 Installation of the electrovalve block
Specifications of the electrovalves:
Hydraulic:
Adhered bonding Ø 63 (2")
Maximum pressure:
Minimum closing pressure:
Minimum opening pressure:
Pressure drop:
Possibility of manual opening by using the red key positioned on the coil of each electrovalve. (Fig. 5)
Electric:
Supply of 24 Vac.
Consumption 3W.
The pipes adhered to the electrovalves will have a diameter of 63.
It is recommended to place a valve behind each electrovalve for easy maintenance.
S1
3
/h)
2.5
0.6
50
3
/h)
Flow m³/h
Nozzle
Branch
5
10
5
15
Nozzle
outlet
2
S3
3
S3
10 Kg/cm²
0.6 Kg/cm²
0.4 Kg/cm²
0.4 Kg/cm² (for flows up to 20 m³/hr)
S2
S3
4
5
1.25
1.8
100
150
Minimum
Maximum
10
1
Pressure drop (mca)
Nozzle
Valve
9.5
1.8
9.5
6
Pump pressure
3
Flow (m
/h)
10
15
3
S4
6
2.10
200
15
1.4
Remaining
Total
installation
4.7 *
16
5.5 *
21
(mca)
16 *
21 *
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