Engineering manual - SAB 355 Screw compressor unit (including ATEX)
004100 en 2020.10
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Installation instructions
Fig. 82: Pipe layout
Sabroe
unit
Compressor
model
Discharge flange to separator flange
Bolt size
Torque
(ft-lb)
Torque
Nm
SAB 355 S SGC 3511 M24 x 3.0 240 325
SAB 355 L SGC 3515 M24 x 3.0 240 325
SAB 355 E
SGC/SGX 3519
M24 x 3.0 240 325
SAB 355 X
SGC/SGX 3524
M24 x 3.0 240 325
Table 32: Torque requirements
Note: Based on:
a. Gaskets-Garlock(R) Blue-Gard(R) 3300
b. Bolts-class 8.8 or stronger hex head bolts, lightly oiled and clean
Chapter 5. Physical and connection data includes dimension data and piping connections
descriptions.
Refrigerant connection to compressor and unit
The connecting pipe must be welded onto a connecting branch on a stop valve. In order to protect
the stop valve when welding, remove the insides of the valve. Do not put the insides back into the
valve until the weld has cooled off - see the instructions from the valve supplier in chapter 19.
Torque.
The welding must be carried out according to the specifications and standards applying to the
plant in question.
Refrigerant connection to oil cooler
Connection dimensions as well as location of connecting branches are included in section 5.2.1
Connections to the compressor unit.
Connection to safety valve
Piping connections to external safety valves are made according to current legislation in the coun-
try in question.
Connection to economiser
Piping connection to the economiser is made according to the piping diagram applying to the
plant.
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