KSB RPH Series, Operating Instructions Manual

Page: 17 / 24

RPH
17
7.5.5 Clearances
Pump
size
Suction-side casing
wear ring
Nominal ID
7)
Clearance gap
(standard)
Min. clearance gap
to API 610
Discharge-side
casing wear ring
Nominal ID
7)
Clearance gap
(standard)
Min. clearance gap
to API 610
25-180 70 0.5
1)
0.30 70 0.5
1)
0.30
25-230 70 0.5
1)
0.30 70 0.5
1)
0.30
40-180 80 0.5
1)
0.33 80 0.5
1)
0.33
40-230 80 0.5
1)
0.33 80 0.5
1)
0.33
40-280 85 0.6
2)
0.33 120 0.6
2)
0.40
40-181 95 0.6
2)
0.35 95 0.6
2)
0.35
40-231 95 0.6
2)
0.35 95 0.6
2)
0.35
40-281 95 0.6
2)
0.35 120 0.6
2)
0.40
40-361 95 0.6
2)
0.35 165 0.6
2)
0.45
50-180 120 0.6
2)
0.40 120 0.6
2)
0.40
50-230 120 0.6
2)
0.40 120 0.6
2)
0.40
50-280 120 0.6
2)
0.40 120 0.6
2)
0.40
50-360 120 0.6
2)
0.40 165 0.6
3)
0.45
50-450 120 0.6
2)
0.40 195 0.7
4)
0.48
80-180 135 0.6
3)
0.43 135 0.6
3)
0.43
80-230 135 0.6
3)
0.43 135 0.6
3)
0.43
80-280 135 0.6
3)
0.43 135 0.6
3)
0.43
80-360 135 0.6
3)
0.43 165 0.6
3)
0.45
80-450 135 0.6
3)
0.43 195 0.7
4)
0.48
100-180 165 0.6
3)
0.45 165 0.6
2)
0.45
100-230 165 0.6
3)
0.45 165 0.6
2)
0.45
100-280 165 0.6
3)
0.45 165 0.6
2)
0.45
100-360 165 0.6
3)
0.45 165 0.6
2)
0.45
100-450 175 0.6
3)
0.45 195 0.7
4)
0.48
150-230 195 0.7
4)
0.48 195 0.7
4)
0.48
150-280 195 0.7
4)
0.48 195 0.7
4)
0.48
150-360 195 0.7
4)
0.48 195 0.7
4)
0.48
150-450 200 0.7
4)
0.48 235 0.7
4)
0.53
200-280 225 0.7
4)
0.50 225 0.7
4)
0.50
200-360 235 0.7
4)
0.53 280 0.7
5)
0.58
200-450 235 0.7
4)
0.53 280 0.7
5)
0.58
150-501 225 0.7
5)
0.5 225 0.7
5)
0.5
200-401 250 0.6
3)
0.53 250 0.6
3)
0.53
200-501 255 0.6
5)
0.55 255 0.6
5)
0.55
250-401 330 0.75
5)
0.63 330 0.75
5)
0.63
250-501 310 0.6
5)
0.6 310 0.6
5)
0.6
150-630 240 0.7
5)
0.53 290 0.7
5)
0.58
200-670 290 0.6
3)
0.58 290 0.6
3)
0.58
250-630 330 0.75
6)
0.63 340 0.75
6)
0.63
250-710 310 0.7
5)
0.6 340 0.85
6)
0.63
1) Tol 0 3) Tol 0 5) Tol 0
- 0.050 - 0.050 - 0.080
2) Tol 0 4) Tol 0 6) Tol 0
- 0.050 - 0.080 - 0.1
7) Nom. diameter rounded to full mm
Characteristic curves are based on standard clearance gaps. All dimensions in mm.
Fig. 11
Clearance gaps
API requests larger clearance gaps for temperatures higher
than 200
°
C if impeller or impeller wear rings are made of
EN-Norm Closest ASTM equivalent
1.4408 / 1.4409 A 743 Grade CF8M / CF3M
1.4580 A 276 Grade 316CB
1.4552 A 743 Grade CF8C
1.4308 A 743 Grade CF8
1.4571 A 276 Type 316Ti
1.4581 A 351 Grade CF10MC
1.4550 A 182 Grade F347
Increased gaps are KSB-standard.