OB

Oil vapor ejector pumps

Oil vapor ejector pumps are robust oil booster pumps with high pumping speed and gas-throughput

Leybold OB series of oil vapor ejector pumps are high vacuum booster pumps for harsh process industry applications featuring a combination of Jet- and Diffusion-stages to achieve high pumping speed and gas throughput combined with high vacuum backing pressure resistance.

The pumping speed ranges from 6,000 to 18,000 l/s in an operating pressure range of 6x10^-1 to < 10^-5mbar. They are ideally suited for processes where you need pumping speed and gas-throughputs, which could not be covered by mechanical booster pumps. The direct heating concept ensures a fast heat-up time and the large oil volume a long standby time. Even dust and dirt have no influence on the OB oil vapor pumps’ vacuum performance.

The design of the oil booster pumps from Leybold is well proven in industrial high vacuum applications. They excel above all through excellent vacuum performance data and are, owing to their rugged design, a reliable component in many medium and high vacuum units. The water-cooled oil booster pumps are ideal for such applications.

User advantages

Four-stage nozzle systems and jet stage

Modular design

Compact design with large oil tank

Direct heater design

Energy Efficiency Control

Key Facts

Pumping speed 6.000 to 18.000 l/s

Operating range < 6x10^-1 to 10^-5 mbar

Optimal pumping speed in a pressure range of 10^-2to 10^-3mbar

The OB line offers

high pumping speed in a compact format
Rugged and long life
Selectable flange connections (OB 12,000 and 18,000 only)
Small manageable amount of spare parts
Pump components (e.g., heating elements, diffusion corpus, jet corpus) are similar for all OB sizes and can be exchanged easily
Modern electronic pump monitoring (PLC controlled)
High energy efficiency due to direct heating
Optimized heating design for long oil change intervals

OB benefits at a glance

The OB oil booster pumps offer features to boost your processes on the next level.

Jet and diffusion stage
Modular design
Small footprint
Direct heater design
Energy Efficiency Control (EEC)

Jet and diffusion stage combination

The special design with several four-stage nozzle systems (diffusion stages) in combination with a jet stage leads to high pumping speeds and gas-throughput in harsh processes.

Stable pumping speed in operating pressure ranges
High fore vacuum tolerance
High gas-throughputs
High dirt resistant
Fast heat up time

Modular design

The OB series offers a modular design of the pump stages and jet stage. The different modular stages are usable even if you service one of them

Stability
Easy to maintain
Small manageable amount of spare parts

Small footprint with large oil tank

The OB pumps have a compact design and small footprint with central supply connections. This leads to a simple integrity into your application. The large oil tank supports your process by increasing maintenance intervals

Optimal integrity in your application
Long service intervals
High dirt resistance

Direct heater design

The direct heater design of the OB series transfers the energy into the oil fluid and ensures a fast heat-up time and low power demand.

Long lifetime for oil
Easy exchange of heater cartridges

Energy Efficiency Control

Energy savings up to 30% without pump performance loss

Leybold OB pumps require a certain minimum oil temperature for operation. Without a controller, 100% of the installed heating power is constantly utilized to heat the oil. Leybold’s innovative energy efficiency controller for diffusion pumps cuts power consumption by up to 30% as the supplied power is significantly reduced after the pump has attained its operating temperature. Further savings result from the utilization of the standby mode at a reduced temperature.