4 Technical data
4.2 Required NPSH values
Size
Parameter
Unit
15 –
26
32 –
42
55 –
85
105 –
118
160 –
210
235 –
275
370 –
450
550 –
880
851 –
951
1101 –
1301
1501 –
1701
2250
2850 –
3550
Viscosity min. – max.
[mm
2
/s] 1.5 – 10000
Speed max.
Depending on viscosity, NPSH value and size
Max. inlet pressure
o
Standard mechanical
seal
[bar]
6
o
Mechanical seal of
hard material
[bar]
10
o
Standard radial shaft
seal
[bar]
1.5
o
Shaft seal special
design
[bar]
Customer-specific, contact the manufacturer
Tab. 3: Operating limits
4.2 Required NPSH values
The required NPSH values of the pump depend on the size, the viscosity of the pumped liquid and the
speed.
The NPSH values are available on the website of the manufacturer:
4.3 Sound pressure level
Guide values at 1 m distance, 1450 min
-1
, 10 bar
Size
15 –
42
55 –
118
160 –
275
370 –
450
550 –
880
851 –
1301
1501 –
1701
2250 –
3550
Max. sound pressure level ±3 [dB(A)]
Pump
56.0
61.0
66.0
69.0
74.0
77.0
79.0
86.0
Motor
53.0
58.0
65.0
68.0
69.0
69.0
72.0
77.0
Pump unit
58.0
63.0
68.5
71.5
75.5
77.5
80.0
86.5
Tab. 4: Sound pressure level
4.4 Weights
The weight is specified on the rating plate.
Operating instructions
OIC 18en-GB Edition 2020-01
9
