The document compares the specifications of chilled water, condenser water, and hot water pumps from KSB and Wilo. Both brands offer pumps with chrome steel shafts, copper-tin impellers, IE3 motor efficiency levels, and IP55 motor protection. However, the Wilo pumps have higher motor and pump efficiencies compared to the KSB pumps, ranging from 69-74% for KSB versus 92.4% for Wilo. Wilo pumps also tend to be lighter in weight for the same flow rates and pressures.

1. COMPARISION BETWEEN KSB AND WILO PUMPS
CHILLED WATER PUMP
ELEMENTS KSB WILO
Model ETN-65-50-200 NL-65-200
Shaft Chrome Steel X30Cr13
Impeller CC480K DW G-CuSn10
Flow 355 GPM 355 GPM
Motor efficiency Level IE3 IE3
Motor Power 18.5 KW 18.5/2 pole
RPM 2900 2900
Motor Make KSB-Motor Siemens
Efficiency 73.2 92.4
Dimensions Weight= 228 kg Weight=215 kg
Head 160 FT 160 ft
Motor Protection IP55 IP55
Operating permissible
pressure
16 bar 16 bar
CONDENSOR WATER PUMP
ELEMENTS KSB WILO
Model ETN-125-100-160 NL-100-200
Shaft Chrome Steel X30Cr13
Impeller CC480K DW G-CuSn10
Flow 875 GPM 355 GPM
Motor efficiency Level IE3 IE3
Motor Power 30 KW 22 kw
RPM 2900 2900
Motor Make KSB-Motor Siemens
Efficiency 74.2 92.4
Dimensions Weight= 228 kg Weight=294 kg
Head FT 95 Ft
Motor Protection IP55 IP55
Operating Permissible
Pressure
16 bar 16 bar
HOT WATER PUMP
ELEMENTS KSB WILO
Model ETN-65-50-200 NL-50-200
Shaft Chrome Steel X30Cr13
Impeller CC480K DW G-CuSn10
Flow 250 GPM 250 GPM
Motor efficiency Level IE3 IE3
Motor Power 15 KW 11 KW
RPM 2900 2900
Motor Make KSB-Motor Siemens
Efficiency 69 92.4
Dimensions Weight= 228 kg Weight=195 kg
Head 95 FT 140 Ft
Motor Protection IP55 IP55
Operating Permissible
Pressure
16 bar 16 bar