Goulds Pumps 3420 - IOM - Manual (Page 65)

3420 IOM 8/09
61
Table 9 (inches) (con't)
Group
Impeller
Size
Material Vanes
Standard Impeller and
Casing Wearing Rings
(Fig. 51)
Flashed Impeller Wearing Rings
(Fig. 52)
Impeller
Ring (A) Casing
Ring
Diameter
Clearance
Impeller
Ring (C) Casing
Ring
Diameter
Clearance
Length
(E)
Angle
(F)
M
Modified
20x24-28
Iron &
Bronze
6&7
18.480 18.500 .020 18.480 18.500 .020
.38 8°
18.477 18.503 .026 18.477 18.503 .026
Steel 6&7
18.470 18.500 .030 18.470 18.500 .030
.38 8°
18.477 18.530 .036 18.477 18.503 .036
20x24-28H
Iron &
Bronze
7
19.538 19.558 .020 19.538 19.558 .020
.38 8°
19.535 19.561 .026 19.535 19.561 .026
Steel 7
19.528 19.558 .030 19.528 19.558 .030
.38 8°
19.525 19.561 .036 19.525 19.561 .036
20x24-28N
Iron &
Bronze
5
18.980 19.000 .020 18.980 19.000 .020
.38 8°
18.977 19.003 .026 18.977 19.003 .026
Steel 5
18.980 19.000 .020 18.980 19.000 .020
.38 8°
18.977 19.003 .026 18.977 19.003 .026
20x24-28g
Iron &
Bronze
5
17.607 17.625 .018 17.607 17.625 .018
.38 8°
17.604 17.628 .024 17.604 17.628 .024
Steel 5
17.607 17.635 .028 17.635 17.635 .028
.38 8°
17.604 17.638 .034 17.638 17.638 .034
__
18x20-24
Iron &
Bronze
6
15.492 15.508 .016 15.492 15.508 .016 .38
8°
15.489 15.511 .022 15.489 15.511 .022
Steel 6
15.482 15.508 .026 15.492 15.508 .016 .38
8°
15.479 15.511 .032 15.489 15.511 .022
18x20-24G
Iron &
Bronze
5
14.734 14.750 .016 14.734 15.508 .016 .38
8°
14.731 14.753 .022 14.731 15.511 .022
Steel 5
14.724 14.750 .026 14.724 14.750 .026 .38
8°
14.721 14.753 .032 14.721 14.753 .032
18x20-24N
Iron &
Bronze
5
15.984 16.000 .016 15.984 16.000 .016 .38
8°
15.981 16.003 .022 15.981 16.003 .022
Steel 5
15.974 16.000 .026 15.974 16.000 .026 .38
8°
15.971 16.003 .032 15.971 16.003 .032
L
24x30-32
Iron &
Bronze
6
23.707 23.731 .024 23.707 23.731 .024
.50 8°
23.702 23.734 .032 23.702 23.734 .032
Steel 6
23.707 23.741 .034 23.707 23.741 .034
.50 8°
23.702 23.744 .042 23.702 23.744 .042
24x30-32N
Iron &
Bronze
6
23.707 23.731 .024 23.707 23.730 .024
.50 8°
23.702 23.734 .032 23.702 23.734 .032
Steel 6
23.707 23741 .034 23.707 23.741 .034
.50 8°
23.702 23.744 .042 23.702 23.744 .042
24x30-32H
Iron &
Bronze
7
21.959 21.981 .022 21.959 21.981 .022
.50 8°
21.956 21.984 .028 21.956 21.984 .028
Steel 7
21.959 21.991 .032 21.959 21.991 .032
.50 8°
21.956 21.994 .038 21.956 21.994 .038
24x30-32G
Iron &
Bronze
6
21.959 21.981 .022 21.959 21.981 .022
.50 8°
21.956 21.984 .028 21.956 21.984 .028
Steel 6
21.959 21.991 .032 21.959 21.991 .032
.50 8°
21.956 21.994 .038 21.956 21.994 .038
6