Flowserve ISC Series - Manual (Page 3)

3
Seal Chamber Requirements Figure 1
1.4 Make sure the shaft or sleeve and the seal housing face are clean
and free of burrs, cuts, dents, or corrosion that might cause leakage
past the sleeve gasket or gland gasket. Replace worn shaft or
sleeve. Remove sharp edges from keyways and threads.
1.5 Check equipment dimensions to ensure that they are within the
specifications shown in Figures 1 and 2. Critical dimensions from
Figure 2 include:
• Box Bore (ØC)
• Box Depth (G)(Q)
• Distance to First Obstruction (K)
• Pump Frame accomodates Gland OD (ØE)
1.6 Check gland bolting to ensure the bolt diameter and bolt circle
conform to the dimensions shown in Figure 2. Check gland bolt
length to ensure adequate thread engagement for the actual seal
gland.
1.7 Check gland bolt length to ensure adequate thread engagement
for the actual seal gland. Gland dimensions are provided in the
drawing that accompanied the seal.
1.8 Handle the ISC with care, it is manufactured to precise tolerances.
The sealing faces of the ISC seal are the rotating and stationary
faces. They are lapped flat to within three helium light bands (34.8
millionths of an inch). Keep the seal faces perfectly clean at all
times.
If the pump condition exceeds the above criteria (including consideration for thermal growth), consult
Flowserve Application Engineering for recommendations to avoid seal performance compromises.
To first obstruction
Face of seal housing to be square to the axis
of the shaft to within 0.013 mm per millimeter
(0.0005 inches) of seal chamber bore FIM and
have a √1.6
μ
m (63
μ
inch) R finish or better a
Gland pilot can be at either of these
register locations, concentric to within
0.13 mm (0.005 inch) FIM of shaft or sleeve OD
Seal housing bore to have √3.2 μm
(125 μinch) R finish or better
Sleeve or shaft finish to be
0.8 μm (32 μinch) R or better
a
a
Shaft or sleeve OD
+0.000 mm (+0.000 inch)
-0.050 mm (-0.002 inch) ANSI
+0.000 mm (+0.000 inch) API 610/682
-0.025 mm (-0.001 inch) DIN/ISO
• Bearings must be in good condition
• Maximum lateral or axial movement of shaft (end play) = 0.25 mm (0.010 inch) FIM
• Maximum shaft runout at face of seal housing = 0.05 mm (0.002 inch) FIM
• Maximum dynamic shaft deflection at seal housing = 0.05 mm (0.002 inch) FIM