Flowserve S-series PolyChem - Manual (Page 46)

USER INSTRUCTIONS POLYCHEM S-SERIES ENGLISH 71569207 11-08
Page 46 of 52
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Figure 6-28
6.10.3.1 Closed impeller vane exception
PS1.5x1-6
<114.3 mm (4.5 in.)
Trim impeller vane (Figure 6-28) below 114.3 mm
(4.5 in.) with a staggered cut to avoid contacting the
component core.
6.10.3.2 Open impeller vane minimum trim
restriction
The minimum diameter to which an impeller can be
trimmed is based on the size of the component core.
The metal portion of the impeller has been etched
and or stamped with a code to aid in identifying the
size of the component core.
Pump models PS1.5x1-6OP, PS3x1.5-6OP,
PS3x2-6OP, PS3x2-10OP and PS4x3-10OP
Five digits are etched on those impellers without a
stem and stamped on those impellers with a stem.
The digits correspond to the impeller part number
which in turn corresponds to the minimum trim to
which the impeller can be machined. Figure 6-29
identifies the minimum impeller trim based on these
numbers.
Figure 6-29
Minimum trim
Pump model
Impeller
code mm in.
51998 152.4 6.00
49989 139.7 5.50
50009 127.0 5.00
50012 114.3 4.50
PS1.5x1-6OP
50015 101.6 4.00
49926 152.4 6.00
49966 139.7 5.50
PS3x1.5-6OP
PS3x2-6OP
49969 127.0 5.00
49707 228.6 9.00
50125 203.2 8.00
50128 177.8 7.00
PS3x2-10OP
50131 152.4 6.00
50204 228.6 9.00
20207 203.2 8.00
PS4x3-10OP
50210 177.8 7.00
Pump models PS50-315, PS65-315, PS100-315,
PS3x2-13, PS4x3-13 and PS6x4-13HD
The first five digits and letter located on the stem
identifies the pump model while the next two or three
digits represent the trim diameter of the component
core. Figure 6-30 identifies the minimum impeller
trim based on the component core size.
Figure 6-30
Minimum trim
Impeller stem code
mm in.
116 304.8 12.00
106 279.4 11.00
96 254.0 10.00
86 228.6 9.00