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UNI 9490-10779 FIRE-FIGHTING UNITS<br />
WITH 1-2 K-NKP-G ELECTRIC PUMPS<br />
Main components foreseen by the UNI 9490 standard<br />
5<br />
12<br />
1 2 7 6<br />
10<br />
3<br />
A<br />
11<br />
B<br />
4<br />
9<br />
8<br />
1 PUMP + PILOT<br />
P1<br />
P3<br />
6 7 10 5 12<br />
1<br />
2<br />
2<br />
A<br />
11<br />
3<br />
B<br />
3<br />
B<br />
P2<br />
P1<br />
P3<br />
9 8<br />
4<br />
2 PUMPS + PILOT<br />
A - Connector for suction tank<br />
To be connected to the bottom of the suction tank<br />
with a check valve.<br />
Only for overhead installation.<br />
B - Check valve control tap<br />
To be connected to the drain for overhead and<br />
underhead installations.<br />
4 - Water recirculation diaphragm to be connected:<br />
- to the top of the suction tank for overhead<br />
installations.<br />
- to the top of the water tank<br />
for underhead installation.<br />
P1 - Pump no. 1<br />
P2 - Pump no. 2<br />
P3 - Pilot Pump<br />
1 - Pilot pump control panel<br />
2 - Pump control panel<br />
3 - Inspectable check valve<br />
5 - Main pump start pressure switch<br />
6 - Delivery manifold<br />
7 - Membrane expansion tank<br />
8 - Suction valve<br />
Optional for underhead installations<br />
9 - Anti-vibration joint (optional)<br />
10 - Flow meter (optional)<br />
11 - Vacuum pressure gauge<br />
12 - Manual test tap<br />
121<br />
®
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