Engineering manual - SAB 355 Screw compressor unit (including ATEX)
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004100 en 2020.10
Physical and connection data
Noz. size
Nps
Torque (ft-lbf) Torque (Nm)
Axial
Vert. Lat.
Axial
Vert. Lat.
M
R
M
C
M
L
M
R
M
C
M
L
1
25 25 25 34 34 34
1.25 25 25 25 34 34 34
1.5 50 40 40 68 54 54
2 100 70 70 136 95 95
3 250 175 175 339 237 237
4
400 200 200 542 271 271
5 425 400 400 576 542 542
6 1000 750 750 1356 1017 1017
8 1500 1000 1000 2034 1356 1356
10 1500 1200 1200 2034 1627 1627
Table 8: Allowable flange loads
Noz. size
Nps
Load (lbf) Load (N)
Axial
Vert. Lat.
Axial
Vert. Lat.
P V
C
V
L
P V
C
V
L
1 50 50 50 222 222 222
1.25 50 50 50 222 222 222
1.5 100 75 75 445 334 334
2 150 125 125 667 556 556
3 225 250 250 1001 1112 1112
4 300 400 400 1334 1779 1779
5 400 450 450 1779 2002 2002
6 650 650 650 2891 2891 2891
8 1500 900 900 6672 4003 4003
10 1500 1200 1200 6672 5338 5338
Table 9: Allowable flange loads
5.2 Connection data
5.2.1 Connections to the compressor unit
See unit dimension sketches.
Refrigerant suction side
On the compressor suction side, the pipe connection is made to the stop valve, pos. 101, see pip-
ing diagrams. The pipe connection is welded on the valve connecting branch.
Note: Be careful not to damage the valve and other parts of the unit when welding. See chapter
7. Installation instructions.
Refrigerant discharge side
On the compressor discharge side, the pipe connection is made to the stop valve, pos. 102, on
the oil separator, see piping diagrams. The pipe connection is welded on the connecting branch of
the valve.
Note: Be careful not to damage the valve and other parts of the unit when welding. See chapter
7. Installation instructions.
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