Operating data
	
Requested flow rate	
250.00 m³/h	

Requested developed head	
95.50 m	

Pumped medium	
Water, heating water	

Heating water up to 100°C (max.), acc. to VDI 2035	

Not containing chemical and mechanical substances which affect the materials	

Ambient air temperature	
20.0 °C	

Fluid temperature	
55.0 °C	

Fluid density	
985 kg/m³	

	Actual flow rate	
250.01 m³/h	

Actual developed head	
95.50 m	

Efficiency	
82.7 %	

MEI (Minimum Efficiency Index)	
≥ 0.60	

Power absorbed	
77.27 kW	

Pump speed of rotation	
2978 rpm	

NPSH required	
6.48 m	

Permissible operating pressure	
16.00 bar.g	

		
Fluid viscosity	
0.52 mm²/s	

Suction pressure max.	
0.00 bar.g	

Mass flow rate	
68.43 kg/s	

Max. power on curve	
101.07 kW	

Min. allow. flow for continuous stable operation	
49.23 m³/h	

Shutoff head	
102.03 m	

	Discharge press.	
9.23 bar.g	

Min. allow. mass flow for continuous stable operation	
13.48 kg/s	

Max. allow. mass flow	
116.30 kg/s	

Design	
Single system 1 x 100 %	

tolerances to ISO 9906 class 3B	

Design
	
Pump standard	
EN 733	

Design	
Baseplate mounted, long-coupled	

Orientation	
Horizontal	

Suction nominal dia.	
DN 125	

Suction nominal pressure	
PN 16	

Suction position	
axial	

Suction flange dimension according to standard	
EN1092-2	

Suction flange drilled according to standard	
EN1092-2	

Discharge nominal dia.	
DN 100	

Discharge norminal pressure	
PN 16	

Discharge position	
top (0°/360°)	

Discharge flange dimension according to standard.	
EN1092-2	

Discharge flange drilled according to standard	
EN1092-2	

Shaft seal	
Single acting mechanical seal	

Manufacturer	
KSB	

Type	
1	

	Material code	
BQ1EGG-WA	

Shaft seal code	
11	

Sealing plan	
A Single-acting mechanical seal (A-type casing cover, taper bore)	

Minimum requirements for hot water quality: treatment acc. to VdTÜV regulation TCH 1466 and solids content up to max. 5 mg/l.
Seal chamber design	
Conical seal chamber (A-type cover)	

Contact guard	
With	

Wear ring	
Casing wear ring	

Impeller diameter	
265.0 mm	

Free passage size	
18.8 mm	

Silicon free pump assembly	
Yes	

Bearing bracket construction	
Water standard standard	

Bearing bracket size	
35	

Bearing seal	
V ring	

Bearing type	
Anti-friction bearings	

Lubrication type	
Grease	

Color	
Ultramarine blue (RAL 5002) KSB-blue	

Driver, accessories
	
Manufacturer	
Flender	

Coupling type	
Eupex N	

Nominal size	
160	

	

	

Coupling guard type	
Lightweight, not treadproof (ZN79)	

Guard size	
B189	

Guard material	
Galvanised steel ST TZN	

	

	

Baseplate type	
U-beam / folded plate	

Baseplate size	
11B	

	

	

Driver type	
Electric motor	

Drive standard mech.	
IEC	

Model (make)	
KSB-Motor	

Drive supplied by	
Standard motor supplied by KSB - mounted by KSB	

Motor const. type	
B3	

Motor size	
280M	

Efficiency class	
Efficiency class IE3 acc. to IEC60034-30-1	

Motor speed	
2978 rpm	

Frequency	
50 Hz	

	Rated voltage	
400 V	

Rated power P2	
90.00 kW	

Available reserve	
16.47 %	

Rated current	
159.6 A	

Starting current ratio	
8	

Insulation class	
F to IEC 34-1	

Motor enclosure	
IP55	

Cos phi at 4/4 load	
0.86	

Motor efficiency at 4/4 load	
95.0 %	

Temperature sensor	
3 PTC resistors	

Terminal box position	
0°/360° (top)	

Viewed towards the suction nozzle	

Motor winding	
400 / 690 V	

Number of poles	
2	

Connection mode	
Delta	

Motor cooling method	
Surface cooling	

Motor material	
Grey cast iron GG/CAST IRON	

Motor noise pressure level	
81 dBa	

Motor data can vary from type plate information. Motor data describes KSB´s choice functional specification and is used for pump selection.

Materials  G

Notes 1	

Notes 2	

Unalloyed cast iron components: pH = 9 to 10.5 and O2 content <= 0.02 mg/kg.
Unalloyed  steel or cast steel components: pH = 9 to 10.5.
Volute casing (102)	
Grey cast iron EN-GJL-250/A48CL35B	

Casing cover (161)	
Grey cast iron EN-GJL-250/A48CL35B	

Shaft (210)	
Tempered steel C45+N	

Impeller (230)	
Grey cast iron EN-GJL-250/A48CL35B	

Bearing bracket (330)	
Grey cast iron EN-GJL-250/A48CL35B	

	Flat gasket (400)	
DPAF seal plate asbestos free	

Casing wear ring (502.1)	
Grey cast iron GG/CAST IRON	

Casing wear ring (502.2)	
Grey cast iron GG/CAST IRON	

Shaft sleeve (523)	
CrNiMo steel	

Shaft protecting sleeve (524)	
Without	

Stud (902)	
Steel 8.8	

Nut (920.01)	
8+A2A/  8+B633 SC1 TP3	

Nut (920.95)	
Steel 8	

	

Curve data

Speed of rotation	
2978 rpm	

Fluid density	
985 kg/m³	

Viscosity	
0.52 mm²/s	

Flow rate	
250.01 m³/h	

Requested flow rate	
250.00 m³/h	

Total developed head	
95.50 m	

Requested developed head	
95.50 m	

Efficiency	
82.7 %	

MEI (Minimum Efficiency Index)	
≥ 0.60	

Power absorbed	
77.27 kW	

NPSH required	
6.48 m	

Curve number	
K1311.452/47	

Effective impeller diameter	
265.0 mm	

	

		

Drawing is not to scale	 Dimensions in mm	
	
Motor
Motor manufacturer	
KSB-Motor	

Motor size	
280M	

Motor power	
90.00 kW	

Number of poles	
2	

Speed of rotation	
2978 rpm	

Position of terminal box	
0°/360° (top)	

Viewed towards the suction nozzle	

Baseplate
Design	
U-beam / folded plate	

Size	
11B	

Material	
Steel ST	

Leakage drain baseplate (8B)	
Rp1, Without	

Foundation bolts	
M20x250 (Not in scope of supply)	

	Connections
Suction nominal size DN1	
DN 125 / EN1092-2	

Discharge nominal size DN2	
DN 100 / EN1092-2	

Nominal pressure suct.	
PN 16	

Rated pressure disch.	
PN 16	

Coupling
Coupling manufacturer	
Flender	

Coupling type	
Eupex N	

Coupling size	
160	

Spacer	
0.0 mm	

Weight net
Pump	
98 kg	

Baseplate	
118 kg	

Coupling	
10 kg	

Coupling guard	
2 kg	

Motor	
762 kg	

Total	
990 kg	

Connect pipes without stress or strain!

	For auxiliary connections see separate drawing.	

	
	
Connections

Pump casing variant	
	
XX46	

6B Pumped liquid drain	
G 1/2	
Drilled and plugged.	

6D Pumped medium - filling / venting	
G 1/2	
Not executed	

8B Leakage drain	
G 1/2	
Drilled	

1M.1 / 6D Pressure gauge or filling/venting connection	
G 1/2	
Drilled and plugged.	

1M.2 Pressure gauge connection	
G 1/2	
Not executed