Alfa Laval ALP 100, Operating Instructions Manual

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13.3 Tightening torques
Table 21: Tightening torques
Tightening torque [Nm] for screws with metric t head contact surfaces with thread measured in inches
Thread 8.8 10.9
8.8 +
Alu*
+ wedge lock wash-
ers Stainless steel screws A2
and A4 Screw plugs with elastomer
seal
8.8
Rust-
proof
A4-70
Property
class 70
Property
class 80
Thread
Galv
stainless steel
1.5 - 1.2 1.5 1.1 - - G 1/8" 13
2.9 4.1 2.3 3 2 - - G 1/4" 30
6.0 8.0 4.8 6.0 3.9 3.5 4.7 G 3/8" 60
9.5 14 7.6 10.3 6.9 6 8 G 1/2" 80
23.1 34 18.4 25 17 16 22 G 3/4" 120
46 68 36.8 47 33 32 43 G 1" 200
80 117 64 84 56 56 75 G 1 1/4" 400
127 186 101 133 89 - - G 1 1/2" 450
M 16 194 285 155 204 136 135 180
M 18 280 390 224 284 191 - -
* Reduced tightening torque when
screwing into aluminium.
M 20 392 558 313 399 267 280 370
M 24 675 960 540 687 460 455 605
Table 22: Tightening torques for fixing screws of conical hub connectors
Tightening torques [Nm] for fixing screws of conical hub connectors
Thread 12.9
M 3 1.8
M 4 4.5
M 6 16
M 8 37
M 10 73
M 12 126
200007725-1-EN-GB 75
Appendix 13 EN