Flowserve ISC2 Série Instructions De Montage page 13

Figure 4
overstress these components, e.g. the max permitted tightening
torque must not be exceeded.
6.8 Assemble the equipment per manufacturer specifications. Avoid
pipe strain. Align the coupling per manufacturer specifications.
6.9 With the impeller, shaft, coupling and bearings in their final oper-
ating position, tighten the drive collar set screws. See Figure .
Recommended ISC2 seal minimum set screw torque by size range:
Seal inch 1.000 - 2.500
Size
(mm) (25 - 60)
Gland Size
All
Torque 0 in-lbs
(.5 N-m)
Inaccurate tightening of these screws can lead to unsafe situa-
tion as mechanical seal may move out of the seal chamber when
pressure is applied.
Figure 5
2.625 - 2.750 2.875 - 8.000
(67 - 70) (75 - 203)
All Standard Bore
120 in-lbs 150 in-lbs
(13.5 N-m) (16.9 N-m)
flowserve.com
2.875 - 8.000
(75 - 203)
Enlarged Bore
20 in-lbs
(27.1 N-m)
13