1
2
9
3
4
5
7
6
10
11
8
Fig. 8:
Roots pump with tubular gas cooler
1
Vacuum flange
7
Cooling water connection, inlet
2
Cooling gas connection
8
Fore-vacuum connection
3
Fore-vacuum flange
9
Gas cooler
4
Measurement connection
10
Cold gas circulation pipe
5
Cooling water connection, outlet
11
Temperature monitoring (option)
6
Measurement connection
Procedure
1. Design the gas cooler in mild steel or stainless steel, according to the media being conveyed.
2. Establish the pipe connections according to the respective design drawing.
3. Choose a minimum fore-vacuum line cross section equal to the size of the connection nominal di-
ameter of the fore-vacuum flange.
4. When connecting the flanges, observe the correct position of the seals.
5. Maintain a tension-free connection.
5.8 Connecting the cooling water supply
WARNING
Risk of scalding from suddenly escaping hot cooling water
The cooling water connections are open to both sides. When connecting the cooling water supply,
there is a risk of scalding from the sudden escape of overpressurized hot water.
► Prior to installation, ensure that pressure is discharged from the cooling water system, and that it
is cooled down.
► Wear protective equipment, e.g., safety goggles and gloves.
Using a cooling water control valve
► Install a cooling water control valve at the cooling water inlet of the gas cooler.
Installation
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