Flowserve MARK 3 GROUP 4 - Manual (Page 24)

MARK 3 GROUP 4 USER INSTRUCTIONS ENGLISH 71569286 08-12
Page 24 of 48 flowserve.com
®
Table 4.7.2.2
Pump Size
Maximum forces (F) in N (lbf) and moments (M) in Nm (lbf•ft)
Suction Discharge
Mx My Mz Fx Fy Fz Mx My Mz Fx Fy Fz
4K8x4x18
3530
(2600)
1760
(1300)
2580
(1900)
4890
(1100)
3780
(850)
3100
(700)
1330
(980)
680
(500)
1000
(740)
1420
(320)
1160
(260)
1780
(400)
4K10x6x18
10040
(7400)
4880
(3600)
7200
(5600)
13340
(3000)
10680
(2400)
8900
(2000)
4600
(3400)
2360
(1740)
3560
(2600)
4980
(1120)
4100
(920)
6220
(1400)
4K10x8x18
10040
(7400)
4880
(3600)
7200
(5600)
13340
(3000)
10680
(2400)
8900
(2000)
7060
(5200)
3520
(2600)
5160
(3800)
7560
(1700)
6220
(1400)
9780
(2200)
4K12x10x18
12200
(9000)
5960
(4400)
9220
(6800)
16000
(3600)
13340
(3000)
10680
(2400)
10040
(7400)
4880
(3600)
7600
(5600)
10680
(2400)
8900
(2000)
13340
(3000)
4K14x12x18
12740
(9400)
6240
(4600)
9500
(7000)
16900
(4000)
14240
(3200)
11560
(2600)
12200
(9000)
5960
(4400)
9220
(7200)
13340
(3000)
10680
(2400)
16000
(3600)
4K14x14x18
12740
(9400)
6240
(4600)
9500
(7000)
16900
(4000)
14240
(3200)
11560
(2600)
12740
(9400)
6240
(4600)
9500
(7000)
14240
(3200)
11560
(2600)
17800
(4000)
4K16x16x18
14640
(10800)
7320
(5400)
10840
(8000)
20460
(4600)
16900
(3800)
13340
(1500)
14640
(10800)
7320
(5400)
10840
(8000)
16900
(3800)
13340
(3000)
20460
(4600)
Notes:
1) F = External force (tension or compression) M = External moment, clockwise or counter-clockwise
2) Forces and moments may be applied simultaneously in any direction
3) Correct values by material factor
4) Higher loads may be applicable, if direction and magnitude of individual loads are known, but these need written approval from Flowserve
5) Pumps must be on rigid foundations and baseplates must be fully grouted
6) Pump/baseplate should not used as pipe anchor. Expansion joints must be properly tied
7) The pump mounting bolt torques specified must be used to prevent relative movement between the pump casing and baseplate. (See
section 6.6, Fastener torques. ) The bolt material must have a minimum yield strength of 600 N/mm 2 (87 000 lb/in. 2 )
4.7.3 Suction piping
a) The inlet pipe should be one or two sizes larger
than the pump inlet bore and pipe bends should
be as large a radius as possible.
b) Pipework reducers should have a maximum total
angle of divergence of 15 degrees.
c) On suction lift the piping should be inclined up
towards the pump inlet with eccentric reducers
incorporated to prevent air locks.
d) On positive suction, the inlet piping must have a
constant fall towards the pump.
e) Flow should enter the pump suction with uniform
flow, to minimize noise and wear. This is
particularly important on large or high-speed
pumps that should have a minimum of four
diameters of straight pipe on the pump suction
between the elbow and inlet flange. See section
10.3,
Reference 1
for more detail.