Levitronix BPS-2000.2 - Npshr Curves

User Manual for BPS-2000
www.levitronix.com
PL-4021-00, Rev02, DCO# 15-235
9
2.5 NPSHr Curves
Figure 8: NPSHr curves for “High Flow” pump head
(Measured with pump-head LPP-2000.6)
Figure 9: NPSHr curves for “High Pressure” pump head
(Measured with pump-head LPP-2000.7)
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]
[gpm]
[bar]
[lpm]
Specific gravity = 1 g/cm
3
Viscosity = 0.7 cP
Liquid Temp.: 40 C
NPSHr Criteria:
Minimum absolute inlet pressure where the
pump pressure is reduced to 3%
6000 rpm
5000 rpm
8000 rpm
7000 rpm
0 2 4 6 8 10 12 14 16 18 20 22
0
2
4
6
8
10
0.0
0.2
0.4
0.6
0.8
1.0
0 10 20 30 40 50 60 70 80
[gpm]
[m]
[bar]
[lpm]
Specific gravity = 1 g/cm
3
Viscosity = 0.7 cP
Liquid Temp.: 40 C
NPSHr Criteria:
Minimum absolute inlet pressure where the
pump pressure is reduced to 3%
9000 rpm
10000 rpm
8000 rpm
6000 rpm
5000 rpm
7000 rpm