Flange Loading And Tightening Torques - EBARA EVM Série Manuel D'utilisation Et D'entretien

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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
GB
results in damage to some of the pump's vital parts. Chap.
15.5 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

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