Flowserve DMX - Manual (Page 36)

DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09
Page 36 of 60
STUD SIZE
DMX/DMXD
PUMP
DMXH/DMXDH
PUMP
INCH UN 8 Nm lbf ft Nm lbf ft
1.125 750 550 930 685
1.250 1050 775 1310 965
1.375 1425 1050 1775 1310
1.500 1700 1250 2100 1550
1.625 2300 1700 2875 2120
1.750 3150 2320 3930 2900
1.875 4200 3100 5220 3850
2.000 4600 3400 5760 4250
2.250 6670 4920 8340 6150
2.500 9220 6800 11525 8500
2.750 12420 9160 15525 11450
3.000 16160 11920 20200 14900
The above torque values will be applied
only when the casing hydro test pressure is equal to
or less than the values showing in the following table.
Any hydro test pressure exceeding these values must
have torque values cleared by Flowserve.
PUMP TYPE
MAX. HYDRO PRESSURE
bar psi
3x8DMX 207 3000
3x10DMX 276 4000
3x10DMXH 414 6000
4x10DMX/DMXD 276 4000
4x10DMXH/DMXDH 414 6000
4x11DMX/DMXD 276 4000
4x11DMXH/DMXDH 414 6000
6x11DMX/DMXD 276 4000
6x11DMXH/DMXDH 379 5500
6x13DMX/DMXD 224 3250
6x13DMXH/DMXDH 345 5000
8x13DMX/DMXD 224 3250
8x13DMXH/DMXDH 248 3600
8x14DMX/DMXD 224 3250
8x14DMXH/DMXDH 248 3600
8x15DMX/DMXD 207 3000
8x15DMXH/DMXDH 248 3600
10x16DMXD 186 2700
The above torque values apply only to
standard stud material, i.e. ASTM A193 GrB7. Any
other material must have torque values cleared by
FLOWSERVE.
The above torque values assume good
thread well greased.
When reassembling the pump, all fasteners
must be tightened to the correct torque value.
Failure to observe this warning could result in
injury to operating personnel.
6.6 Disassembly
For a better understanding of this section please refer
to the exploded views drawings in section 8.
6.6.1
Dismantling procedure
a) Remove all auxiliary piping and instrumentation
that will interfere with disassembly, and drain oil
from bearing housings.
Use extreme caution not to expose
maintenance personnel to hot liquids when
removing auxiliary piping or draining bearing
housings.
b) Remove temperature detectors (if supplied) and
all other instruments from bearing housings.
c) When mechanical seals are used, loosen piping
and seal gland bolting.
6.6.2
Removal of seal chamber parts
To remove mechanical seal from pump:
a) Install setting plates/eccentric washer in place.
b) Loosen drive collar.
c) Remove gland bolting.
d) Slide mechanical seal from shaft after bearing
housings are removed as described in 6.6.4 and
6.6.5.
Seal may be disassembled/inspected/reassembled
per seal manufacturer’s drawing and instructions in
Appendix of this manual.
After reassembly of seal, setting
plates/eccentric washers must be removed before
start-up.
6.6.3
Coupling removal
Remove coupling guard. Remove coupling bolting
and remove the spacer piece (if used). Loosen set-
screws in coupling nut and remove nut.