Models:
SD versions (ACP 15 / ACP 28 / ACP 40)
The ACP SD version designed for applications that require pumping of clean (dust-free) and non-corrosive gases. The standard pumps are equipped with a gas ballast equipment in order to improve the pumping of light gases and to avoid the condensation of steam inside the pump. Three gas ballast options are available.
CV (condensable vapors) versions (ACP 28 / ACP 40)
The CV-version is specially designed for avoiding vapor condensation inside the pump block. This occurs through: A high gas ballast throughput for heating up pumps and diluting condensable gases. A silencer with drain screws for releasing liquid at the lowest point of the exhaust. Flushing gas injection to protect the ball bearing and the shaft seals. The CV version has a water vapor capacity of up to 1,000 grams per hour.
CP (gas recirculation) versions (ACP 28 / ACP 40)
The CP version is best suited for rare gas recirculation, where process gases are separated from the air and other gases. It is achieved by adding an extra port to allow pumping inside the gearbox casing and removing undesired gases. The standard usage is to pump through all ports, fill the pump with the recirculating gas, and isolating the gas ballast casing port.
Features:
- Ideal replacement for scroll and oil-sealed pumps
- Air cooling - No installation and operational costs for water supply
- Frequency converter - Hour meter, remote operation mode (RS-485, dry contacts), multiple rotational speed selection (power saving, noise reduction, adaptation to application cycle)
- Several gas port options - Purge gas, gas ballast, other specific ports according to application
- Universal power supply - Wide voltage supply 50/60 Hz single-phase and three-phase
- Standards - Compliance with CE standards, UL/CSA certified, SEMI S2 certified
Applications:
- Electron microscopes
- Surface analyzers
- Leak detectors
- Mass spectometers
- Optical spectrometers
- Particle accelerators
- Turbo pumping stations
- Laboratories
- Lamp manufacturing
- Vacuum coating
- Cryo pumps regeneration
- Plasma cleaning
- Drying
- Load-lock
Videos

Pfeiffer Vacuum multi-stage Roots pump ACP
The multi-stage Roots pump technology of the ACP series meets the requirements of applications where a clean and dry vacuum is needed.
Runtime: 2:02
Specifications Table
Pump Model | ACP 15 | ACP 28 (CV/CP) | ACP 40 (CV/CP) |
---|---|---|---|
Pumping Speeds |
50 (Hz)
8.24 CFM 233 L/min 3.89 L/s 14.0 m3/hr
60 (Hz)
8.20 CFM 232 L/min 3.85 L/s 13.9 m3/hr |
50 (Hz)
15.9 CFM 450 L/min 7.50 L/s 27.0 m3/hr
60 (Hz)
16.0 CFM 453 L/min 7.52 L/s 27.2 m3/hr |
50 (Hz)
21.8 CFM 616 L/min 10.3 L/s 37.0 m3/hr
60 (Hz)
22.0 CFM 622 L/min 10.3 L/s 37.4 m3/hr |
Max Water Vapor Pumping Rate (with gas ballast) |
80.0 g/hr | 120 - 700 g/hr | 120 - 700 g/hr |
Ultimate Pressure |
Total With Gas Ballast
1.00 x 10-1 hPA 1.00 x 10-1 mbar 10.0 Pa 7.50 x 10-2 Torr
Total Without Gas Ballast
3.00 x 10-2 hPA 3.00 x 10-2 mbar 3.00 Pa 2.25 x 10-2 Torr |
Total With Gas Ballast
3.00 x 10-2 - 1.00 x 10-1 hPA 3.00 x 10-2 - 1.00 x 10-1 mbar 3.00 - 10.0 Pa 2.25 x 10-2 - 7.50 x 10-2 Torr
Total Without Gas Ballast
3.00 x 10-2 hPA 3.00 x 10-2 mbar 3.00 Pa 2.25 x 10-2 Torr |
Total With Gas Ballast
1.00 x 10-1 hPA 1.00 x 10-1 mbar 10.0 Pa 7.50 x 10-2 Torr
Total Without Gas Ballast
3.00 x 10-2 hPA 3.00 x 10-2 mbar 3.00 Pa 2.20 x 10-2 - 2.50 x 10-2 Torr |
Cooling Method(s) |
Method Convection |
Method Convection |
Method Convection |
Motor Power HP (kW) | 0.60 ( 0.45 ) | 0.94 ( 0.70 ) | 0.94 ( 0.70 ) |
Inlet Flange | KF25 |
KF25 |
KF40 |
Exhaust Flange | KF16 |
KF25 |
KF25 |
Compression Stages | 6 |
6 |
6 |
Series | Standard |
Standard |
Standard |
Weight Lbs (kg) | 50.7 ( 23.0 ) | 66.1 ( 30.0 ) | 70.5 ( 32.0 ) |
Dimensions in. (mm.) | 20.2 x 7.48 x 10.6 (514 x 190 x 270 ) | 24.1 x 7.36 x 12.4 to 24.7 x 7.60 x 12.7 (612 x 187 x 314 to 627 x 193 x 322 ) | 24.1 x 7.36 x 12.4 to 24.7 x 7.60 x 12.7 (627 x 193 x 322 to 627 x 193 x 322 ) |
Lubrication Type | Dry |
Dry |
Dry |
Technology Type | Multi-Stage Roots |
Multi-Stage Roots |
Multi-Stage Roots |