Oil Sealed Rotary Vane Vacuum Pumps

Being the outcome of 75 years’ experience, the RV series rotary vane pumps are the optimum range of small oil sealed rotary vane pumps produced using the clean sheet design technology.

With an undoubtable success range owing to the fact that its designed to be reliable and adaptable to various applications, the Edwards RV series of vacuum pumps are an industry standard with a striking 200,000 units sold. They are widely known for a quiet operation at fast pumping speeds with ultimate vapour handling capacities.

  • High Vapour Handling:
    Faster Process
  • Superior Particulate Handling:
    Highly Reliable
  • Fast Acting, Dependable Inlet Valve for Anti-Suck Back Protection:
    Safe Process & System
  • Mode Selector & Two Position Gas Ballast:
    Designed to Meet Your Vacuum Requirements
  • Designed for Easy Maintenance:
    No Unexpected Downtime
  • Quiet Running:
    Optimum Work Environment

 PUMP RANGES

The Edwards range of rugged pumps provide optimum vapour handling capacity with noiseless operations, at good pumping speeds.

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  • Analytical instruments - LCMS
  • Distillation
  • Extraction
  • Filtration
  • Freeze drying
  • Gel drying
  • Solvent recovery
  • Centrifugal evaporation

DUSTY APPLICATIONS

  • Furnaces
  • De-gassing

CLEAN DRY APPLICATIONS

  • Analytical instruments - GCMS
  • Centrifuges
  • Coating
  • Turbo pump backing
  • Gas bottle filling/emptying
  • Leak detectors
  • Load locks
  • Electron microscopes

SPECIAL APPLICATIONS

We are always willing to offer a customized range of pumps depending upon your requirements, if they do not match with the categories already available. Examples from the past for the same include:

  • PFPE prepared pumps
  • Versions compatible with brake fluid
  • ATEX approved pumps
  • Air driven motor variants for oil and gas rig
  • Many of the customized variants designed for uncommon applications for meeting customer requirements have gone on to become industry standards. It will be our pleasure to meet your requirements, so please ask your local salesmen for any queries.

KEY FEATURES AND BENEFITS

WET PUMPING

Fundamental benefits of Edwards RV pumps for “wet” applications:

  • Highest vapour pumping capacity amongst rotary vane pumps.
  • Pump maintains lubrication at a high flow due to the distinctive mode selector switch
  • Gives a 220g/hr (290g/hr on RV12) water vapour handling capacity due to the highest gas ballast flow amongst all rotary vane pumps.
  • Optional oil return kit to ensure the oil remains in the pump at high flow

A nitrile (Buna-N) conversion kit is available for applications where there is incompatibility between vapours and fluoroelastomer (FKM) seals. Moreover, for pumping large quantities of oxidants, PFPE pumps may also be ordered.

DUSTY
Fundamental benefits of Edwards RV pumps for “dusty” applications

For preventing the dust getting back into the process, the Edwards RV pumps have premier anti-suck back protection. For removing pressure surge, there is a controlled opening by oil pressure.
Quick closing within 0.4 seconds of pump stopping due to dump valve

  • Clogging is avoided by having a large diameter in oil passages (3-5mm)
     
  • There are diameters less than 1mm in oil passages in some competing pumps.

The Edwards range of RV pumps are perfect for dusty applications and are designed using the experience of CVD and PVD applications from the semiconductor industry.

CLEAN/DRY
Fundamental benefits of Edwards RV pumps for clean/dry applications

  • Pump maintains lubrication at a high flow due to the distinctive mode selector switch
  • Optional oil return kit to ensure the oil stays in the pump at high flow
  • For preventing the oil mist getting back into the process, the Edwards RV pumps have premier anti-suck back protection. For removing pressure surge, there is a controlled opening by oil pressure.
    Quick closing within 0.4 seconds of pump stopping due to dump valve
  •  

The pioneering mode selector function on the pump indicates that the pump will work well in both high vacuum applications and high throughput application. An optional oil return kit can be fixed to allow continuous operation for high throughput applications without losing oil down the exhaust line.

OXIDANTS
Key benefits of Edwards RV pumps for pumping oxidants:

  • Highest gas ballast of any rotary vane pump
    Allows dilution of pumped gases to minimise oxidation of the oil
  • PFPE variants available
    Ideal for pumping oxygen and halogenated compound

The RV pump is an ideal pump for oxygen because it maintains dilution to a level lower than the explosive limit. When the optional oil return kit is fitted, the gas ballast is prevented from blowing oil into the exhaust. Oxidation of the oil is avoided by the PFPE prepared pump.

This is the reason why oxidants such as halogens and halogenated compounds can also be pumped using the RV pumps. In that case, a gas ballast is useful for the protection of oil and bearings even though there is no fire/explosion issue with the same. PFPE must be used to prolong the life of the pumps.