Flange Forces And Torques - Grundfos CR Installation And Operating Instructions Manual

8.9 Flange forces and torques

If not all loads reach the maximum permissible value stated in the
tables after fig. 10, one of these values may exceed the normal
limit. Contact Grundfos for further information.
Y-direction: Inlet/outlet
Z-direction: Direction of chamber stack
X-direction: 90 ° from inlet/outlet
Fig. 10 Flange forces [F] and torques [M]
Force limits
Flange
ANSI DN
[in] [mm]
1/
25/32
1 1/4
1 1/2 40
2 50
2 1/2 65
3 80
4 100
Torque limits
Flange
ANSI DN
[in] [mm]
1/
25/32
1 1/4
1 1/2 40
2 50
2 1/2 65
3 80
4 100
16
Pump
Cast iron pump housing
Force,
Type Y-direction Z-direction
[lb]
1s-5 76
10 93
15, 20 127
32 156
45 211
64 282
Pump
Cast iron pump housing
Torque,
Type Y-direction Z-direction
[ft-lb]
1s-5 221
10 295
15, 20 332
32 369
45 240
64 277
CR -
Force, Force, Force,
X-direction Y-direction
[lb] [lb]
89 72
105 84
131 114
177 143
173 190
228 253
CR -
Torque, Torque, Torque,
X-direction Y-direction
[ft-lb] [ft-lb]
129 92
203 148
240 184
258 221
295 406
350 461
CRI, CRN -
Stainless steel pump housing
Force, Force,
Z-direction X-direction
[lb] [lb] [lb]
152 177 143
185 211 169
253 261 228
312 354 287
421 346 379
565 455 506
CRI, CRN -
Stainless steel pump housing
Torque, Torque,
Z-direction X-direction
[ft-lb] [ft-lb] [ft-lb]
443 258 184
590 406 295
664 479 369
738 516 443
479 590 811
553 701 922