76
EN
17 2
Diagram of peak flow
1000
1200
1400
1600
1800
2000
2200
2400
2600
2800
3000
3200
3400
3600
3800
4000
1,0
1,5
2,0
2,5
3,0
3,5
4,0
4,5
5,0
B
A
1
2
3
4
A
Peak flow [l/h]
B
Inflow water hardness [mmol/l]
1 2 bar pressure loss
2 BWT Perla hybrid, max. capacity
3 1 bar pressure loss
4 BWT Perla hybrid, min. capacity
mmol/l
°dH
mmol/l
°dH
1.0
5.6
3.5
19.6
1.5
8.4
4.0
22.4
2.0
11.2
4.5
25.2
2.5
14.0
5.0
28.0
3.0
16.8
Peak flow
The peak flow is the flow rate at which the product’s outlet water hardness value is reduced to values
less than 10% of the inflow water hardness for at least 10 minutes. The pressure difference may rise to
greater than 1 bar.
Operating flow
The operating flow is the flow rate on which independent testing institutions based their capacity testing
(see DIN EN 14743 for details).
Nominal flow
The nominal flow rate is the volume flow at which the product causes a pressure drop of 1 bar at a water
temperature of 15 °C when the blending is closed.
