EBARA EVM Series, Operating And Maintenance Manual, Page: 16 / 96

16
EN
Use suitable supports for the suction and delivery lines so that they do not
subject the pump’s flange to too much stress.
If the pump is installed with a suction lift arrangement (level of liquid lower
than the pump) and it feeds an open circuit, you will need to install a foot
valve at the end of the suction line. In this case it is advisable to use a hose
connected to the pump.
WARNING!
Make sure that the sum of the difference in height between
the water and suction port and pressure losses along the
suction line is lower than the pump’s theoretical suction lift.
Water temperature and altitude also have a negative effect
on the pump’s theoretical suction lift. If the sum of the vari-
ous factors affecting suction lift exceeds the actual pump’s
theoretical suction lift, we are faced with the cavitation
problem, which compromises hydraulic performance and
results in damage to some of the pump’s vital parts. Chap.
15.4 Gives specific information on how to check that the
pump’s operation is not being affected by cavitation.
8.3 FLANGE LOADING AND TIGHTENING TORQUES
Flange tightening torques
Model
Flange
DN
Bolt
n.
Bolt
Tightening torque
[Nm]
EVMS (L)(G) 1 N 25 M10 2 30
EVMS (L)(G) 1 F 25 M12 4 50
EVMS (L)(G) 1 LF 25 M12 4 50
EVMS (L)(G) 3 N 25 M10 2 30
EVMS (L)(G) 3 F 25 M12 4 50
EVMS (L)(G) 3 LF 25 M12 4 50
EVMS (L)(G) 5 N 32 M10 2 30
EVMS (L)(G) 5 F 32 M16 4 70
EVMS (L)(G) 5 LF 32 M16 4 70
EVMS (L)(G) 10 N 40 M12 2 50
EVMS (L)(G) 10 F 40 M16 4 70
EVMS (L)(G) 10 LF 40 M16 4 70
EVMS (L)(G) 15 N 50 M12 2 50
EVMS (L)(G) 15 F 50 M16 4 70
EVMS (L)(G) 15 LF 50 M16 4 70
EVMS (L)(G) 20 N 50 M12 2 50
EVMS (L)(G) 20 F 50 M16 4 70
EVMS (L)(G) 20 LF 50 M16 4 70
EVM
(L)
32 F
65 M16 4 80
65 M16 8 80
(G)
65 M16 4 80
65 M16 8 80
EVM
(L)
45 F
80 M16 8 80
80 M16 8 80
(G)
80 M16 8 80
80 M16 8 80
EVM
(L)
64 F
100 M16 8 80
100 M20 8 100
(G)
100 M16 8 80
100 M20 8 100
Admissible strain on the flange
Model
Flange
DN
Strain X
[N]
Strain Y
[N]
Strain Z
[N]
EVMS (L)(G) 1 N 25 230 200 180
EVMS (L)(G) 1 F 25 230 200 180
EVMS (L)(G) 1 LF 25 230 200 180
EVMS (L)(G) 3 N 25 230 200 180
EVMS (L)(G) 3 F 25 230 200 180
EVMS (L)(G) 3 LF 25 230 200 180
EVMS (L)(G) 5 N 32 270 230 210
EVMS (L)(G) 5 F 32 270 230 210
EVMS (L)(G) 5 LF 32 270 230 210
EVMS (L)(G) 10 N 40 370 330 300
EVMS (L)(G) 10 F 40 370 330 300
EVMS (L)(G) 10 LF 40 370 330 300
EVMS (L)(G) 15 N 50 490 450 400
EVMS (L)(G) 15 F 50 490 450 400
EVMS (L)(G) 15 LF 50 490 450 400
EVMS (L)(G) 20 N 50 490 450 400
EVMS (L)(G) 20 F 50 490 450 400
EVMS (L)(G) 20 LF 50 490 450 400
EVM
(L)
32 F
65 2100 1850 1700
65 2100 1850 1700
(G)
65 1050 925 850
65 1050 925 850
EVM
(L)
45 F
80 2500 2250 2050
80 2500 2250 2050
(G)
80 1250 1125 1025
80 1250 1125 1025
EVM
(L)
64 F
100 3350 3000 2700
100 3350 3000 2700
(G)
100 1675 1500 1350
100 1675 1500 1350
Admissible torque on the flange
Model
Flange
DN
Torque X
[Nm]
Torque Y
[Nm]
Torque Z
[Nm]
EVMS (L)(G) 1 N 25 190 240 160
EVMS (L)(G) 1 F 25 190 240 160
EVMS (L)(G) 1 LF 25 190 240 160
EVMS (L)(G) 3 N 25 190 240 160
EVMS (L)(G) 3 F 25 190 240 160
EVMS (L)(G) 3 LF 25 190 240 160
EVMS (L)(G) 5 N 32 230 280 190
EVMS (L)(G) 5 F 32 230 280 190
EVMS (L)(G) 5 LF 32 230 280 190
EVMS (L)(G) 10 N 40 310 390 270
EVMS (L)(G) 10 F 40 310 390 270
EVMS (L)(G) 10 LF 40 310 390 270
EVMS (L)(G) 15 N 50 340 420 300
EVMS (L)(G) 15 F 50 340 420 300
EVMS (L)(G) 15 LF 50 340 420 300
EVMS (L)(G) 20 N 50 340 420 300
EVMS (L)(G) 20 F 50 340 420 300
EVMS (L)(G) 20 LF 50 340 420 300
EVM
(L)
32 F
65 1200 1500 1100
65 1200 1500 1100
(G)
65 600 750 550
65 600 750 550
EVM
(L)
45 F
80 1300 1600 1150
80 1300 1600 1150
(G)
80 650 800 575
80 650 800 575
EVM
(L)
64 F
100 1450 1750 1250
100 1450 1750 1250
(G)
100 725 875 625
100 725 875 625