Levitronix PuraLev 2000SU - 2.4 Pressure-Flow Curves; 2.5 NPSHr Curves

User Manual for PuraLev
®
2000SU
www.levitronix.com
PL-4034-00, Rev02, DCO# 20-144
8
2.4 Pressure-Flow Curves
Figure 6: Pressure/flow curves for aqueous liquids
(Measured with pump-head DCP-2000.2)
The linearly increasing cavitation effects flows > 100 l/min and liquid temperature in the range of 90
0
C was
measured for water. This can be different for other liquids and depends on the hydraulic circuit design. For
example: higher inlet pressure reduces cavitation effects.
2.5 NPSHr Curves
Figure 7: NPSHr curves for “High Flow” pump head
(Measured with pump-head DCP-2000.2)
0
10
20
30
40
50
60
70
0 5 10 15 20 25 30 35
0.0
1.0
2.0
3.0
4.0
5.0
0 20 40 60 80 100 120 140
[psi]
[gpm]
[bar]
[lpm]
Specific gravity = 1 g/cm
3
Viscosity = 0.7 cP
Liquid Temp.: 40C
7000 rpm
6000 rpm
5000 rpm
8000 rpm
4000 rpm
0
2
4
6
8
10
0 5 10 15 20 25 30 35
0.0
0.2
0.4
0.6
0.8
1.0
0 20 40 60 80 100 120 140
[m]
[bar]
[lpm]
Specific gravity = 1 g/cm
3
Viscosity = 0.7 cP
Liquid Temp.: 40C
8000 rpm
7000 rpm
6000 rpm