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| Dry Roughing Pumps |
| Cat.
# |
$/Each |
| 7901-33 |
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Dry Roughing Pumps
- Reliable, clean, high-performing laboratory and cleanroom dry pumps for inert gas pumping
- Oil-free operation with universal single-phase power
- With a frictionless design and no wearing parts, no particulate contamination can result
- No hydrocarbon backstreaming due to lubricant-free pumping module
- Constant pumping speed and ultimate pressure due to constant internal clearances
- With complete overhauls due only every 20,000 hours, maintenance costs are low
These Dry Roughing Pumps are extensively field proven and provide clean, low-maintenance, reliable operation in laboratories and cleanrooms. Their compact design allows for easy integration into all applications.
Outstanding Features
The single-phase frequency converter allows these pumps to be powered in the range of 100 V to 230 V 50/60 Hz through a standard IEC connection with automatic voltage range selection. Rotational speed and pumping speed remain constant regardless of voltage and frequency.
A digital timer gives information about accumulated operational hours for maintenance purposes.
Remote control is facilitated through the Sub-D Connector located at the rear side.
Units are air cooled, so no water supply is required. |
Performance Curves
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| Specifications |
| Description |
Cat. # 7901-33 |
| Peak pumping speed |
14 m³/h
8.2 CFM |
Ultimate pressure
Closed gas ballast |
5.10² mbar |
Ultimate pressure
Open gas ballast* |
3.10¹ mbar |
| Maximum continuous inlet pressure |
1013 mbar |
| Input voltage |
90 V to 254 V
50/60 Hz |
| Power consumption |
- at ultimate pressure
- atmosphere |
520 W
600 W |
| Ambient temperature |
12 to 40 ºC |
| Inlet port |
DN25 ISO-KF |
| Exhaust port |
DN16 ISO-KF |
| Tightness |
5.10-7 mbar.l/s |
| Weight |
23 kg |
| Overall dimensions: L x W x H |
504 x 202 x 276 mm |
For condensable vapors pumping capacity, please contact us.
The single-phase frequency converter allows these pumps to be powered in the range of 100 V to 230 V 50/60 Hz through a standard IEC connection with automatic voltage range selection. Rotational speed and pumping speed remain constant regardless of voltage and frequency.
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