Vacuum Components for Automation
Vacuum Ejector
Micro/Mini Ejectors
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Oil Lubricated Vacuum Pumps
Oil Lubricated Rotary Vane Pumps
Oil Bath Vacuum Pumps
Industrial Systems
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DAB Gripper
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DEGA Series
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Palamatic Tube Lifters
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DABHand and DABHandy Lifting Devices
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Special Components
2-Jaw Parallel Grippers
2-Jaw Parallel G. Long Stroke
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3-Jaw Concentric G. Long Stroke
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2-Jaw Parallel Grippers
2-Jaw Parallel G. Long Stroke
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Work Clamping System
Machine Tool System
Inductive Proximity Switches
Pulse Sensors
Identification RFID
Double Sheet Detection
ABB Automotive Tooling
7th Axis Tooling
Applications & Pictures
Components Grid
Air Connectors
CF Tooling
Lifters and Lifting Tools

Oil Lubricated Rotary Vane Pumps

These vacuum pumps are used when the intake flow may contain moisture, or when a better final pressure is required. These pumps may run continuously within certain pressure ranges, or connected to containers to be emptied, whose volume is appropriately sized for the pump flow rate. Long-term use at atmospheric pressure is not recommended.

The lubrication allows this pumps to intake water vapour. To avoid a condensation of the water vapour, the pumps are equipped with a system called “”Gas Ballast””, that introduces air in the compression stage and changes the vapour saturation pressure thus avoiding the condensation. D.V.P. developed a WR pump version with an improved and reinforced Gas Ballast system.

The main application fields of these pumps include: vacuum sealed packaging, thermoforming machines, glass or marble working machines, medical equipments, food-grade pastes or clay extruders.

WR Version

WR version of pump L series has a system that separates oil and water condensate and expells it when the pump is stopped. Peculiarities of this series are: Gas Ballast always inserted; external pirex tube to constantly maintain oil level, oil condition and oil viscosity under control; manual water and oil drain valve; switch of maximum liquid (water-oil) level in the tank.

The main application fields include: vacuum sealed food packaging, pastes and clays outgassing, glass, marble and wood processing machines, electromedical machines.