Goulds Pumps 3420 - IOM - Manual (Page 68)

Table 9 (mm)
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
(B)
Impeller
Ring (C) Casing
Ring
Diameter
Clearance
Length
(E)
Angle
(F)
M
Modified
20x24-28
Iron &
Bronze
6 & 7
469.39 469.90 0.51 469.39 469.90 0.51
9.65 8°
469.32 469.98 0.66 469.32 469.98 0.66
Steel 6 & 7
469.14 469.90 0.76 469.14 469.90 0.76
9.65 8°
469.32 470.66 0.91 469.32 469.98 0.91
20x24-28H
Iron &
Bronze
7
496.27 496.77 0.51 496.27 496.77 0.51
9.65 8°
496.19 496.85 0.66 496.19 496.85 0.66
Steel 7
496.01 496.77 0.76 496.01 496.77 0.76
9.65 8°
495.94 496.85 0.91 495.94 496.85 0.91
20x24-28N
Iron &
Bronze
5
482.09 482.60 0.51 482.09 482.60 0.51
9.65 8°
482.02 482.68 0.66 482.02 482.68 0.66
Steel 5
482.09 482.60 0.51 482.09 482.60 0.51
9.65 8°
482.02 482.68 0.66 482.02 482.68 0.66
20x24-28G
Iron &
Bronze
5
447.22 447.68 0.46 447.22 47.68 0.46
9.65 8°
447.14 447.75 0.61 447.14 447.75 0.61
Steel 5
447.22 447.93 0.71 447.93 447.93 0.71
9.65 8°
447.14 448.01 0.86 448.01 448.01 0.86
__
18X20-24
Iron &
Bronze
6
393.50 393.90 0.41 393.50 393.90 0.41
9.65 8°
393.42 393.98 0.56 393.42 393.98 0.56
Steel 6
393.24 393.90 0.66 393.50 393.90 0.41
9.65 8°
393.17 393.98 0.81 393.42 393.98 0.56
18X20-24G
Iron &
Bronze
5
374.24 374.65 0.41 374.24 393.90 0.41
9.65 8°
374.17 374.73 0.56 374.17 393.98 0.56
Steel 5
373.99 374.65 0.66 373.99 374.65 0.66
9.65 8°
373.91 374.73 0.81 373.91 374.73 0.81
18X20-24N
Iron &
Bronze
5
405.99 406.40 0.41 405.99 406.40 0.41
9.65 8°
405.92 406.48 0.56 405.92 406.48 0.56
Steel 5
405.74 406.40 0.66 405.74 406.40 0.66
9.65 8°
405.66 406.48 0.81 405.66 406.48 0.81
L
24x30-32
Iron &
Bronze
6
602.16 602.77 0.61 602.16 602.77 0.61
12.70 8°
602.03 602.84 0.81 602.03 602.84 0.81
Steel 6
602.16 552.22 0.86 602.16 552.22 0.86
12.70 8°
602.03 552.30 0.61 602.03 552.30 1.07
24x30-32N
Iron &
Bronze
6
602.16 602.77 0.61 602.16 602.74 0.61
12.70 8°
602.03 602.84 0.81 602.03 602.84 0.81
Steel 6
602.16 552.22 0.86 602.16 552.22 0.86
12.70 8°
602.03 552.30 1.07 602.03 552.30 1.07
24x30-32H
Iron &
Bronze
7
557.76 558.32 0.56 557.76 558.32 0.56
12.70 8°
557.68 558.39 0.71 557.68 558.39 0.71
Steel 7
557.76 558.57 0.81 557.76 558.57 0.81
12.70 8°
557.68 558.65 0.97 557.68 558.65 0.97
24x30-32G
Iron &
Bronze
6
557.76 558.32 0.56 557.76 558.32 0.56
12.70 8°
557.68 558.39 0.71 557.68 558.39 0.71
Steel 6
557.76 558.57 0.81 557.76 558.57 0.81
12.70 8°
557.68 558.65 0.97 557.68 558.65 0.97
64
3420 IOM 8/09