Flowserve VTP Wet Pit - Manual (Page 27)

VERTICAL TURBINE PUMPS (VTPS) CENTRIFUGAL PUMPS ENGLISH 71569224 – 10-13
Page 27 of 76 flowserve.com
i) Check the fit of the straight key and split thrust
rings [312A] in their respective keyseats. (Refer to
paragraph (a) regarding fit of the straight key).
j) Install straight key into keyseat. The bottom of the
key must be above the top of circular keyseat for
the split thrust rings.
k) Lubricate driver half coupling lightly and slide it
onto driver shaft. Slide bottom of coupling above
the top of the keyseat for split thrust rings.
l) Install split thrust rings into circular keyseat and
slide the coupling down over them.
m) Tighten the coupling bolts as follows.
Coupling bolts tightening torques
Coupling
size
Flange diameter
mm (in.)
Torque N·M
(In·lb)
1 & 2
112 & 137
(4.4 & 5.4)
121.5 (1075)
3, 4 & 5
156, 188, & 213
(6.1, 7.4, & 8.4)
237.0 (2100)
6
251
(9.9)
424.0 (3750)
Torque values are for standard fasteners lubricated with a high
stress lubricant (such as, graphite and oil, moly-disulphite, white lead
etc.). For stainless steel bolts, multiply listed torques by 0.80.
n) Proceed with the driver installation.
TYPE WA/PA COUPLING DETAIL
Installation of adjustable flanged spacer 4.5.3.2
coupling WSA/PSA.
Follow procedure from (a) thru (l) as listed in section
4.5.4.1.
c) Bolt spacer [314] to the driver half coupling [42]
using the short set of socket head cap screws
[364]. The male register should be pointing
down. Tighten all cap screws evenly to the bolt
torques as listed in 4.5.4.1 under item (m).
d) Proceed with the driver installation.
TYPE- WSA/PSA COUPLING DEATILS
(12A) TOP SHAFT
(46) KEY ASSEMBLY
(364) CAP SCREW
(44) DRIVEN COUPLING
(66A) ADJUSTING NUT
(312A) SPLIT THRUST
(46A) DRIVE KEY
(42) DRIVER COUPLING
MOTOR SHAFT
HALF
HALF
RING
(12A) TOP SHAFT
(46) KEY ASSEMBLY
(364) CAP SCREW
(44) DRIVEN COUPLING
(42) DRIVER COUPLING
(312A) SPLIT THRUST
(363) HEX NUT
MOTOR SHAFT
HALF
RING
HALF
(364) CAP SCREW
(314) SPACER
(46A) DRIVE KEY