KSB WKTR - Related Documents and Specifications; 9.1 Tightening Torques

9 Related Documents
9.1 Tightening torques
9.1.1 Tightening torques
Observe the tightening torques given for the size and material of screwed
connections.
Table 17: Tightening torques
Thread Tightening torque
[Nm]
Tightening torque
[ftlb]
A193 B8M
CL2
A193 B7 8.8 A193 B8M
CL2
A193 B7 8.8
M 6 6 - 7 9 - 10 8 - 9 4.5 - 5.1 6.5 - 7 6 - 6.5
M 10 33 - 35 44 - 47 38 - 41 24 - 25.5 32 - 34 28 - 30
M 12 55 - 60 75 - 80 67 - 71 42 - 45 55 - 58 50 - 53
M 16 140 - 150 190 - 200 165 - 175 105 - 112 138 - 147 122 - 129
M 20 275 - 295 365 - 385 - 205 - 217 270 - 286 -
M 24 395 - 420 630 - 670 - 292 - 310 464 - 493 -
M 30 650 - 690 1270 - 1340 - 480 - 511 934 - 993 -
M 36 875 - 925 2210 - 2340 - 642 - 680 1628 - 1730 -
9.1.2 Tightening torques for flange bolts
Bolts for flange connection at suction nozzle, discharge nozzle and tapping nozzle:
The tightening torques only apply to bolts included in KSB's scope of supply.
Table 18: Tightening torques for flange bolting
Nominal diameter
[inch]
Nominal pressure
PN class
Torque
[Nm]
Tightening torque
[ftlb]
1/2" 600 35 26
300 22 16
3/4" 600 63 46
300 40 29
2" 600 90 66
300 52 38
3" 600 120 88
300 105 77
4" 600 210 155
300 143 105
6" 600 350 258
300 175 127
8" 600 460 339
300 280 206
10" 600 650 479
300 302 222
NOTE
Observe the drawing in the next section! (⇨ Section 9.1.3 Page 68)
9 Related Documents
WKTR
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