Dry Pump Operational Principle - Alcatel ADP One Series User Manual

Multi-stage Roots
principle
Inlet
Stage 1
(LP1)
Alcatel - High Vacuum Technology - User's Manual ADP/ADS
Dry pump
operational principle
The ADP pump consists of 5 Roots type stages.
The two rotors rotate without touching each other.
The three stages on the low pressure side are called "LP stages"
and the two stages on the high pressure side are called
"HP stages".
Stage 2 Stage 3
(LP2) (LP3)
Stage 4 Stage 5
(HP4) (HP5)
A 50
Water
Silencer
Exhaust
1/3