KSB HPK Series User Manual

4 Description of the Pump (Set)
21 of 80
HPK
1121.8/06-EN
Design The pump is designed with an axial fluid inlet and a radial or tangential outlet. The
hydraulic system runs in its own bearings and is connected to the motor by a shaft
coupling.
Function The fluid enters the pump axially via the suction nozzle (6) and is accelerated
outward by the rotating impeller (7). In the flow passage of the pump casing the
kinetic energy of the fluid is converted into pressure energy. The fluid is pumped to
the discharge nozzle (2), where it leaves the pump. The clearance gap (1) prevents
any fluid from flowing back from the casing to the suction nozzle. At the rear side of
the impeller, the shaft (4) enters the casing via the casing cover (3). The shaft passage
through the cover is sealed to atmosphere with a shaft seal (8). The shaft runs in
rolling element bearings (9 and 10), which are supported by a bearing bracket (5)
linked with the pump casing and/or casing cover.
Sealing The pump is sealed by a shaft seal (standardised mechanical seal or gland packing).
4.7 Noise characteristics
Table10: Surface sound pressure level L
pA
4) 5)
P
N
Pump Pump set
960rpm,
760rpm
1450rpm 2900 rpm 960rpm,
760rpm
1450rpm 2900 rpm
[kW] [dB] [dB] [dB] [dB] [dB] [dB]
1,5 52 53 54 56 58 63
2,2 53 55 56 58 60 66
3 55 56 57 60 62 68
4 56 58 59 61 63 69
5,5 58 59 61 62 65 71
7,5 59 61 62 64 66 72
11 61 63 64 65 68 74
15 63 65 66 67 69 75
18,5 64 66 67 68 70 76
22 65 67 68 68 71 77
30 66 68 70 70 72 78
37 67 70 71 70 73 79
45 68 71 72 71 74 80
55 69 72 73 72 74 80
75 71 73 75 73 76 81
90 71 74 76 73 76 82
110 72 75 77 74 77 82
132 73 76 78 75 77 83
160 74 77 79 75 78 84
200 75 78 80 76 79 84
250 - 79 81 - 80 85
4.8 Scope of supply
Depending on the model, the following items are included in the scope of supply:
▪ Pump
4
Surface sound pressure level as per ISO 3744 and DIN EN ISO 20361 ; valid for a pump operating range of Q/
QBEP=0.8-1.1 and non-cavitating operation. If noise levels are to be guaranteed: Add +3dB for measuring
and constructional tolerance.
5
Increase for 60Hz operation: 3500rpm +3dB; 1750rpm +1dB; 1160rpm ±0dB

KSB HPK Series Specifications

General

Brand	KSB
Model	HPK Series
Category	Water Pump
Language	English