O SERIES AND U SERIES – SINGLE STAGE OIL-LUBIRCATED ROTARY VANE VACUUM PUMPS

Simplicity of design with only one shaft and direct drive produces robust, long-lasting vacuum pumps with low maintenance and running costs. The vanes are sealed by the metered supply of oil. Already equipped with integrated non-return valves and an efficient oil Separation system, these vacuum pumps can be fitted with other accessories without a problem.

U4 Series:

The standard-featured circulating-oil lubrication system with integrated oil cooler and cover additionally minimise noise emission. Controlled by a float valve, the oil return suction system also makes these vacuum pumps suitable for use in rough-vacuum applications. Optional water cooling significantly prolongs the life of the oil, even in difficult ambient conditions.

Optional gas ballast valves prevent condensing vapours from contaminating the pump oil. The oil-water emulsion arising from contamination reduces the pump efficiency or leads to a failure. The valve permits a regulated amount of fresh air (the gas ballast) to fl ow into the pump‘s compression chamber. By mixing saturated intake air with unsaturated fresh air, condensing is suppressed.

O5 and U5 Series:

The vacuum pump configuration with a single shaft and direct drive results in a sturdy and durable unit with low maintenance and running costs. A non-return valve and efficient oil separation are integrated into each vacuum pump. A float valve reliably regulates the return oil intake, even in high pressure ranges. A gas ballast valve (as standard from U 5.70 and with increased volumetric flow as an option) prevents the condensation of steam as far as possible. The gas ballast lets a measured amount of fresh air enter the compression chamber. By mixing saturated intake air with unsaturated fresh air, condensing is kept to a minimum. In addition, the protective cover supplied as standard minimises noise emissions.

An optional water cooling system allows the pump to be operated in higher ambient temperatures or with higher intake temperatures; the service life of the lubricant is also significantly increased. A wide range of accessories complements the pump, making it ideal for various tasks.

The highlights of series O5.:

• 3 compact model sizes from 4.0 to 9.6 m³/h
• Small dimensions, low weight and easy to install
• Gas ballast valve (from O 5.6) for ultimate pressures of 3.0 mbar absolute
• O 5.4 and O 5.8 specially developed for the requirements of packaging systems
• O 5.6 with especially sturdy construction for the widest range of general industry requirements
• Available with numerous motor versions for worldwide use
• Highly efficient air/oil separator element for most effective oil separation
• Ideally suited for vacuum packaging of foodstuffs (meat, fish, cold meats, cheese…)

The highlights of series U5.:

• 8 compact model sizes from 70 to 780 m³/h
• Easy to install
• Fastest pump-down times in comparison
• Integrated gas ballast valve, optional 3 mbar absolute
• Highly efficient cooling allows operation without heat exchanger (U 5.70 & U 5.100)
• Lower installed motor power in direct comparison
• Efficiency class IE3 motors as standard
• Version for protective atmosphere packaging available (O2, N2 …)
• Oil reservoir with two-stage oil separation
• Highly efficient air/oil separator element for most effective oil separation
• Oil filter for long oil service life
• Smooth surfaces for quick and hygienic cleaning
• Ideally suited for vacuum packaging of foodstuffs (meat, fish, cold meats, cheese…)
• Extended characteristic diagram and functionality as an option through VARIAIR control technology in various model sizes

U4.20, U4.40 Vacuum Pump

U7.70 , U4.100, U4.400 Vacuum Pump