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Designed for robust performance and long service life, our V-Series oil-lubricated rotary vane pumps deliver reliable vacuum generation for a wide range of industrial applications. Browse our product range below to find the best fit for your requirements.
Also known as oil-flooded or oil-sealed vacuum pumps, these systems use oil to create a reliable seal, enabling deeper vacuum levels to be achieved.
But the oil does much more than seal. It lubricates key internal components like vanes, rotor, housing, and bearings, reducing wear and extending service life. It also helps lower operating temperatures by minimizing friction and protecting against corrosion.
Crucially, the oil carries away the heat of compression, allowing the compression chamber to run cooler and more efficiently, keeping performance high and impurities low.
Elmo Rietschle’s oil-lubricated rotary vane pumps are engineered to deliver exceptional vacuum performance, reliability, and long service life. The innovative design uses oil as both a lubricant and sealing agent, ensuring smooth operation, reduced wear, and extended maintenance intervals.
The pumps feature a cylindrical housing with an eccentrically positioned rotor. Rotor vanes slide in and out of slots, maintaining contact with the cylinder walls to create cells of varying volume during rotation. This constant change in cell volume generates suction and compression cycles that produce vacuum efficiently.
The de-oiling chamber ensures that the oil-gas mixture is filtered, separating oil particles from the gas for clean operation. Larger oil droplets are collected in an oil sludge recipient, while finer particles are separated through filter elements and reintroduced into the pump’s oil circuit for optimal performance.
• Long vane life for extended reliability
• High tolerance for water vapor and challenging environments
• XD-Versions with increased vapor tolerance and resistance to solvents
• Oxygen conveying pumps available for specialized applications
• Quiet operation with low noise levels
• Easy servicing for minimal downtime
• Robust design for demanding industrial environments
To better understand the mechanics and benefits of these systems, read our introduction to rotary vane vacuum pumps .
The V-Series pumps are engineered to excel in diverse industrial environments, offering capacities ranging from 10 m³/h to 1,535 m³/h and ultimate vacuums as low as 0.5 mbar (abs.). Advanced features like aluminum alloy vanes, gas ballast valves, and oil/air heat exchangers ensure reliable performance even in challenging applications.
Elmo Rietschle’s oil-lubricated rotary vane pumps are adaptable to a wide variety of industries and applications, offering reliable performance and minimal maintenance requirements.
The operating principle of Elmo Rietschle’s rotary vane pumps is based on pressure increase through volume reduction.
Inside the cylindrical housing, a rotor is positioned eccentrically, almost touching the cylinder at one point. Rotor vanes slide in and out of slots due to centrifugal force, maintaining contact with the internal surface of the cylinder to form cells. As the rotor turns, the cell volumes change, drawing air into the pump and compressing it as the cells move toward the outlet port.
Some models feature outlet valves to prevent backflow of discharged air, ensuring reliable and consistent performance. The de-oiling chamber filters the oil-gas mixture in two steps: larger oil droplets are mechanically separated, while finer particles are removed through specialized filter elements. These separated oil particles are reintroduced into the pump’s oil circuit, ensuring efficient oil recycling and continuous operation. The virtually oil-free gas is discharged through the air outlet or connected piping systems, ready for industrial use. This innovative design ensures optimal performance, reliability, and minimal environmental impact, making Elmo Rietschle’s oil-lubricated rotary vane pumps a trusted choice for demanding industrial environments.
Explore the precision engineering of our oil-lubricated rotary vane pumps with a detailed animation. Learn how the unique rotor and vane mechanism, along with advanced oil recycling systems, deliver robust vacuum generation and compression with clean and efficient operation.
