Flowserve MENBLOC User Manual
Page 18
MENBLOC USER INSTRUCTIONS ENGLISH 71576296 - 02/13
Page 18 of 40
flowserve.com
PUMP TYPE
Suction
DN
Discharge
DN
Forces
Moments
Fv max
Fh max
ΣΣΣΣ
Mt max
mm
in.
mm
in.
daN
lbf
daN
lbf
m.daN
lbf.ft
50-32-125
50
2”
32
1”1/4
125
281
95
214
20
148
50-32-160
50
2”
32
1”1/4
125
281
95
214
17
125
50-32-200
50
2”
32
1”1/4
125
281
95
214
17
125
50-32-200L
50
2”
32
1”1/4
125
281
95
214
17
125
65-40-125
65
2”1/2
40
1”1/2
135
304
100
225
22
162
65-40-160
65
2”1/2
40
1”1/2
135
304
100
225
22
162
65-40-200L
65
2”1/2
40
1”1/2
135
304
100
225
20
148
65-40-250
65
2”1/2
40
1”1/2
135
304
100
225
25
185
65-40-250L
65
2”1/2
40
1”1/2
135
304
100
225
25
185
65-50-125
65
2”1/2
50
2”
135
304
100
225
22
162
65-50-160
65
2”1/2
50
2”
135
304
100
225
22
162
65-50-200L
65
2”1/2
50
2”
135
304
100
225
20
148
65-50-250L
65
2”1/2
50
2”
135
304
100
225
25
185
80-65-125
80
3”
65
2”1/2
145
326
105
236
27
199
80-65-160
80
3”
65
2”1/2
145
326
105
236
27
199
80-65-200L
80
3”
65
2”1/2
145
326
105
236
27
199
80-65-250L
80
3”
65
2”1/2
145
326
105
236
27
199
80-65-315
80
3”
65
2”1/2
145
326
105
236
27
199
100-80-160
100
4”
80
3”
180
405
125
281
47
347
100-80-200L
100
4”
80
3”
180
405
125
281
47
347
100-80-250L
100
4”
80
3”
180
405
125
281
47
347
100-80-315
100
4”
80
3”
180
405
125
281
47
347
125-100-200L
125
5”
100
4”
320
720
190
427
95
701
125-100-250L
125
5”
100
4”
330
742
200
450
102
753
125-100-315
125
5”
100
4”
310
697
185
416
92
679
125-100-315L
125
5”
100
4”
310
697
185
416
92
679
Fv
Fh
Fv
Fh
Forces and moments values are applied to the
whole flanges and not flange-by-flange. For their
sharing out on the pump flanges, refer to standard
NFCR 13 931.
Ensure piping and fittings are
flushed before use.
Ensure piping for hazardous liquids is
arranged to allow pump flushing before removal of
the pump.
4.3.2 Suction piping
4.3.2.1 Design of a flooded suction line
The suction line must be as short and direct as
possible, never mount an elbow directly on the
inlet flange of the pump.
Continuous flow valve
MENBLOC
Non-return valve
Valve
Flooded suction configuration
a) Avoid sharp elbows or sudden changes of
diameter. Use reducers with
≤
20° total angle.
b) Arrange the piping so that there are no air
pockets.
c) If high points cannot be avoided in suction line,
install air relief valves.
d) If a strainer is necessary, its net area should
be three or four times the area of the suction
pipe.
e) If an inlet valve is necessary, choose a model
with straight line flow.
Do not tighten flanges before the
final check (see § 4.3.4).