Flowserve ISC2 Series - Manual (Page 12)

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6.5 Position the ISC2 with the gland tight against the seal chamber
face.
6.6 Orient the ISC2 seal with the parts aiming as shown on the seal
assembly drawing. See Section 7 for Piping Recommendations.
6.7 Tighten the gland nuts evenly in a diagonal sequence. Do not
over-tighten the gland nuts, as this can warp seal parts and cause
leakage.
Recommended ISC2 seal minimum gland nut torque by size range:
Seal inch 1.000 - 2.000 2.125 - 2.750 2.875 - .000 .250 - 6.000 6.250 - 8.000
Size (mm) (25 - 50)
(5 - 70) (75 - 102) (108 - 152) (159 - 203)
Torque 15 ft-lbs 20 ft-lbs 30 ft-lbs 35 ft-lbs 0 ft-lbs
(20 N-m) (27 N-m) (0 N-m) (7 N-m) (5 N-m)
Components provided by the customer for installing the mechani-
cal seal, e.g. the pump cover or fastening screws, must exhibit
adequate properties and dimen sions. It must not be possible to
Bearing Frame
Setting Device
Figure 2
Bearing Housing
Seal
Chamber
Figure 3