V8SACSFAMF, Pfeiffer Adixen ACP40 Dry Multi-stage Roots Vacuum Pump, 22 CFM, 10^-2 Torr Ultimate Vacuum, KF40 Inlet

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25.47 (in)
7.60 (in)
12.68 (in)
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Dry compact Multi-stage Roots pump.
Clean vacuum. High reliability.

The multi-stage Roots pump technology of the ACP series meets the requirements of applications where clean and dry vacuum is needed.

No particle contamination

The frictionless pumping module is optimized to operate without internal lubricant and provides outstanding oil-free vacuum with no hydrocarbon vapor back streaming. Without any seals between rotor and stator no particles are generated.

High reliability

The absence of wearing parts inside the pumping module allows for unsurpassed long-term stability and high reliability in even the most demanding applications.

Constant performances

The frequency converter driven motor provides constant rotational speed, thus stable pumping speed and  consistent ultimate pressure are achieved all over the world.

Low maintenance costs

Our ACP pumps require overhaul only every 22,000 hours of operation for the ACP 28/40 and 20,000 hours of operation for the ACP 15 resulting in low cost of ownership.

Condensable vapor ability

High flow gas ballast ports and drainable silencers allow the ACP to pump high amounts of condensable vapors (up to 1,000 g/h of pure water vapor).


Ambient temperature 12-40 °C | 53.6-104 °F | 285-313 K
Connection flange (in) DN 40 ISO-KF
Connection flange (out) DN 25 ISO-KF
Continuous inlet pressure, max. 1,013 hPa | 759.75 Torr | 1,013 mbar
Cooling Air
Dimensions (L x W x H) 647 x 193 x 322 mm | 25.47 x 7.6 x 12.68 inch
Exhaust pressure, max. 1,200 hPa | 900 Torr | 1,200 mbar
Gas ballast Yes
Gas ballast flow 2.4 m³/h | 1.41 cfm | 40 l/min
Helium leakage rate, max. 5 · 10-7 hPa·l/s
Mains cable Yes, EU mains cable  
Mains connection 110 – 230 V AC (±10%) 50/60 Hz
Mains connection: frequency (range) 50/60 Hz
Max. pumping capacity of pure water vapor at 20°C 120 g/h
Power consumption at final pressure 700 W
Processes Light Duty Applications
Pumping speed 37 m³/h | 21.78 cfm | 616.67 l/min
Sound pressure level 65 dB(A)
Version Standard
Weight 32 kg | 70.55 lb
Pump Technology:
Pump Type:
Multi-stage Roots
Ultimate Vacuum:
10^-2 Torr