
MEN USER INSTRUCTIONS ENGLISH 71576288 - 02/13
Page 19 of 36 flowserve.com
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Pump and motor mounted on individual base
plates:
Machines are (or must be) first mounted on their
own base plate in the workshop. Once the pump is
set, it will be regarded as the fixed piece. Any
alignment necessary shall be carried out on the
motor.
Never connect the electric motor
before the setting has been completely finished.
4.5 Piping
The user must verify that the equipment is
isolated from any external sources of vibration.
Protective covers are fitted to the
pipe connections to prevent foreign bodies entering
during transportation and installation. Ensure that
these covers are removed from the pump before
connecting any pipes.
4.5.1 Suction and discharge piping
The dimensions of the pipes do not directly depend
on suction and discharge diameters of the pump:
a) First, choose a flow speed < 2 m/s (7 ft/s) at
suction, and about 3 m/s (10 ft/s) at discharge.
b) Take into account the available NPSH, which
must be superior to the required NPSH of the
pump.
Never use pump as a support for
piping.
Do not mount expansion joints in
such a way that their force, due to internal pressure,
may act on the pump flange.
Maximum forces and moments allowed on the pump
flanges vary with the pump size and type. These
external strains may cause misalignment, hot
bearings, worn couplings, vibrations and the
possible failure of the pump casing. When designing
the pipes (§ 4.5.2.1, § 4.5.2.2, § 4.5.3.1) take
necessary precautions in order not to exceed
maximum allowed strains.
Forces and moments applied to the pump flanges
must never exceed the values shown in the table
below:
MEN
Pump
Suction DNA Discharge DNR Forces Moments
mm in mm in
Fv max Fh max
Σ
ΣΣ
Σ Mt max
daN lbf daN lbf m.daN lbf.ft
50-32-125 50 2.0 32 1.25 125 281 95 214 20 148
50-32-160 50 2.0 32 1.25 125 281 95 214 17 125
50-32-200 50 2.0 32 1.25 125 281 95 214 17 125
50-32-200L 50 2.0 32 1.25 125 281 95 214 17 125
65-40-125 65 2.5 40 1.5 135 304 100 225 22 162
65-40-160 65 2.5 40 1.5 135 304 100 225 22 162
65-40-200L 65 2.5 40 1.5 135 304 100 225 20 148
65-40-250 65 2.5 40 1.5 135 304 100 225 25 185
65-40-250L 65 2.5 40 1.5 135 304 100 225 25 185
65-50-125 65 2.5 50 2.0 135 304 100 225 22 162
65-50-160 65 2.5 50 2.0 135 304 100 225 22 162
65-50-200L 65 2.5 50 2.0 135 304 100 225 20 148
65-50-250L 65 2.5 50 2.0 135 304 100 225 25 185
80-65-125 80 3.0 65 2.5 145 326 105 236 27 199
80-65-160 80 3.0 65 2.5 145 326 105 236 27 199
80-65-200L 80 3.0 65 2.5 145 326 105 236 27 199
80-65-250L 80 3.0 65 2.5 145 326 105 236 27 199
80-65-315 80 3.0 65 2.5 145 326 105 236 27 199
100-80-160 100 4.0 80 3.0 180 405 125 281 47 347
100-80-200L 100 4.0 80 3.0 180 405 125 281 47 347
100-80-250L 100 4.0 80 3.0 180 405 125 281 47 347
100-80-315 100 4.0 80 3.0 180 405 125 281 47 347
125-100-200L 125 5.0 100 4.0 320 720 190 427 95 701
125-100-250L 125 5.0 100 4.0 330 742 200 450 102 753
125-100-315 125 5.0 100 4.0 310 697 185 416 92 679
125-100-315L 125 5.0 100 4.0 310 697 185 416 92 679
125-100-400 125 5.0 100 4.0 285 641 170 382 82 605
125-100-400L 125 5.0 100 4.0 285 641 170 382 82 605
150-125-250L 150 6.0 125 5.0 450 1012 290 652 155 1144
150-125-315L 150 6.0 125 5.0 415 934 260 585 140 1033
150-125-400L 150 6.0 125 5.0 410 922 255 574 137 1011
200-150-315L 200 8.0 150 6.0 500 1125 325 731 175 1292
200-150-400L 200 8.0 150 6.0 500 1125 325 731 175 1292
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