Grundfos CRE Series Product Guide

Operating and inlet
pressure
CR, CRI, CRN, CRE, CRIE, CRNE
19
Operating range of the shaft seal
The operating range of the shaft seal depends on
operating pressure, pump type, type of shaft seal and
liquid temperature. The following curves apply to clean
water and water with anti-freeze liquids. For selecting
the right shaft seal, see List of pumped liquids on
page 74.
CR 1s - CR 20
Fig. 14 Operating range of standard shaft seals for
CR 1s - CR 20
CR 32 - CR 150 (3.0-60 Hp)
Fig. 15 Operating range of standard shaft seals for
CR 32 - CR 150 (3.0-60 Hp)
CR 120 - CR 150 (75-100 Hp)
Fig. 16 Operating range of standard shaft seals for
CR 120 - CR 150 (75-100 Hp)
See section Lists of variants - on request on page 83,
in case of extreme temperatures:
• low temperatures down to –40 °F or
• high temperatures up to +356 °F.
TM02 7537 3703TM02 7873 0604TM04 4415
-40 0 40 80 120 160 200 240 t [°F]
0
100
200
300
400
[psi]
p
0
5
10
15
20
25
[bar]
p
HQQE
HQQV
HQQE
HQQE
-40 0 40 80 120 160 200 240 t [°F]
0
100
200
300
400
500
[psi]
p
-40 -20 0 20 40 60 80 100 t [°C]
0
5
10
15
20
25
30
[bar]
p
KUBE
HUBE / HUBV HUBE
KUUE KUUE KUUV
KUBE / KUBV
KUUE / KUUV
KUHE / KUHV
-80 -40 0 40 80 120 160 200 240 t [°F]
0
100
200
300
400
[psi]
p
HQQE/V
HBQE/V
HQQE
HBQE
HQQE HQQE HQQV
Shaft
seal
Description
Max. temp.
range [ °F]
HQQE
O-ring (cartridge) (balanced seal),
SiC/SiC, EPDM
–22 °F to +248 °F
HBQE
O-ring (cartridge) (balanced seal),
Carbon/SiC, EPDM
+32 °F to +248 °F
HQQV
O-ring (cartridge) (balanced seal),
SiC/SiC, FKM
–4 °F to +194 °F
HUBE
O-ring (cartridge) (balanced seal),
TC/carbon, EPDM
+32 °F to +248 °F
HUBV
O-ring (cartridge) (balanced seal),
TC/carbon, FKM
+32 °F to +194 °F
KUBE
Bellows, metal (cartridge),
TC/carbon, EPDM
+32 °F to +248 °F
KUBV
Bellows, metal (cartridge),
TC/carbon, FKM
+32 °F to +194 °F
KUHE
Bellows, metal (cartridge),
TC/Carbon with embedded TC,
EPDM
+32 °F to +194 °F
KUHV
Bellows, metal (cartridge),
TC/Carbon with embedded TC,
FKM
+32 °F to +194 °F
KUUE
Bellows, metal (cartridge), TC/TC,
EPDM
–22 °F to +194 °F
KUUV
Bellows, metal (cartridge), TC/TC,
FKM
–4 °F to +194 °F
Note: TC= tungsten carbide

Grundfos CRE Series Specifications

General

Motor Type	Asynchronous
Enclosure Class	IP55
Insulation Class	F
Series	CRE
Protection Class	IP55
Material	Stainless Steel
Applications	Water Supply, Pressure Boosting, Irrigation
Pumped liquid	Clean liquids
Approvals	CE
Voltage	380-415V
Connection Size	DN 32 to DN 100
Efficiency	IE3 Premium Efficiency
Power Supply	3-phase
Liquid Temperature Range	-10°C to +120°C
Temperature Range	-10°C to +120°C