EBARA EVM serie Manual De Instrucciones página 16

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-
EN
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
EVMS (L)(G) 1 N
EVMS (L)(G) 1 F
EVMS (L)(G) 1 LF
EVMS (L)(G) 3 N
EVMS (L)(G) 3 F
EVMS (L)(G) 3 LF
EVMS (L)(G) 5 N
EVMS (L)(G) 5 F
EVMS (L)(G) 5 LF
EVMS (L)(G) 10 N
EVMS (L)(G) 10 F
EVMS (L)(G) 10 LF
EVMS (L)(G) 15 N
EVMS (L)(G) 15 F
EVMS (L)(G) 15 LF
EVMS (L)(G) 20 N
EVMS (L)(G) 20 F
EVMS (L)(G) 20 LF
(L)
EVM 32 F
(G)
(L)
EVM 45 F
(G)
(L)
EVM 64 F
(G)
16
Flange n. Tightening torque
Bolt
DN Bolt [Nm]
25 M10 2 30
25 M12 4 50
25 M12 4 50
25 M10 2 30
25 M12 4 50
25 M12 4 50
32 M10 2 30
32 M16 4 70
32 M16 4 70
40 M12 2 50
40 M16 4 70
40 M16 4 70
50 M12 2 50
50 M16 4 70
50 M16 4 70
50 M12 2 50
50 M16 4 70
50 M16 4 70
65 M16 4 80
65 M16 8 80
65 M16 4 80
65 M16 8 80
80 M16 8 80
80 M16 8 80
80 M16 8 80
80 M16 8 80
100 M16 8 80
100 M20 8 100
100 M16 8 80
100 M20 8 100
Admissible strain on the flange
Flange
Model
DN
EVMS (L)(G) 1 N 25
EVMS (L)(G) 1 F 25
EVMS (L)(G) 1 LF 25
EVMS (L)(G) 3 N 25
EVMS (L)(G) 3 F 25
EVMS (L)(G) 3 LF 25
EVMS (L)(G) 5 N 32
EVMS (L)(G) 5 F 32
EVMS (L)(G) 5 LF 32
EVMS (L)(G) 10 N 40
EVMS (L)(G) 10 F 40
EVMS (L)(G) 10 LF 40
EVMS (L)(G) 15 N 50
EVMS (L)(G) 15 F 50
EVMS (L)(G) 15 LF 50
EVMS (L)(G) 20 N 50
EVMS (L)(G) 20 F 50
EVMS (L)(G) 20 LF 50
65
(L)
65
EVM 32 F
65
(G)
65
80
(L)
80
EVM 45 F
80
(G)
80
100
(L)
100
EVM 64 F
100
(G)
100
Admissible torque on the flange
Flange
Model
DN
EVMS (L)(G) 1 N 25
EVMS (L)(G) 1 F 25
EVMS (L)(G) 1 LF 25
EVMS (L)(G) 3 N 25
EVMS (L)(G) 3 F 25
EVMS (L)(G) 3 LF 25
EVMS (L)(G) 5 N 32
EVMS (L)(G) 5 F 32
EVMS (L)(G) 5 LF 32
EVMS (L)(G) 10 N 40
EVMS (L)(G) 10 F 40
EVMS (L)(G) 10 LF 40
EVMS (L)(G) 15 N 50
EVMS (L)(G) 15 F 50
EVMS (L)(G) 15 LF 50
EVMS (L)(G) 20 N 50
EVMS (L)(G) 20 F 50
EVMS (L)(G) 20 LF 50
65
(L)
65
EVM 32 F
65
(G)
65
80
(L)
80
EVM 45 F
80
(G)
80
100
(L)
100
EVM 64 F
100
(G)
100
Strain X Strain Y Strain Z
[N] [N] [N]
230 200 180
230 200 180
230 200 180
230 200 180
230 200 180
230 200 180
270 230 210
270 230 210
270 230 210
370 330 300
370 330 300
370 330 300
490 450 400
490 450 400
490 450 400
490 450 400
490 450 400
490 450 400
2100 1850 1700
2100 1850 1700
1050 925 850
1050 925 850
2500 2250 2050
2500 2250 2050
1250 1125 1025
1250 1125 1025
3350 3000 2700
3350 3000 2700
1675 1500 1350
1675 1500 1350
Torque X Torque Y Torque Z
[Nm] [Nm] [Nm]
190 240 160
190 240 160
190 240 160
190 240 160
190 240 160
190 240 160
230 280 190
230 280 190
230 280 190
310 390 270
310 390 270
310 390 270
340 420 300
340 420 300
340 420 300
340 420 300
340 420 300
340 420 300
1200 1500 1100
1200 1500 1100
600 750 550
600 750 550
1300 1600 1150
1300 1600 1150
650 800 575
650 800 575
1450 1750 1250
1450 1750 1250
725 875 625
725 875 625