Oil sealed pumps

Oil Sealed Pumps are renowned for achieving high ultimate vacuum and rapid pumping speeds, with quiet operation and compact size. Providing long term reliability, these pumps have become the industry standard in range of scientific and laboratory applications, and the ideal partner for your tubomolecular pump.

EOSi Rotary Screw Vacuum Pumps

Edwards EOSi range is a new generation range of quiet, oil-sealed rotary screw vacuum pumps. With Variable Speed Drive (VSD) technology and intelligent control, the EOSi range delivers impressive on-demand performance capability and optimises energy consumption.

Temperature management control enables unrivalled water handling capability to provide you with the versatility and flexibility you need for your application.

EOSi rotary screw vacuum pumps can get peak pumping speed from 400 m3h-1 to 1810 m3h-1 and ultimate vacuum 0,35 mbar.

Features and Benefits
  • Increased efficiency State-of-the-art screw technology, Variable Speed Drive (VSD) and innovative motor design
  • Improved productivity Class-leading pumping speed and fast chamber pumpdown performance capability
  • Intelligent control Closed loop pressure control and active power management
  • Low cost of ownership Automatic performance matched to vacuum demand
  • Quiet operations Noise levels approximately half that of comparable technologies
  • Reduced environmental impast Ultra-high oil retention at all operating pressures
Applications
  • Food freeze drying
  • Altitude simulation
  • Drying
  • Load lock
  • Pipeline drying
  • Central vacuum systems
  • Pneumatic conveying
  • General packaging
  • Plastics (e.g. bath tubs, shower trays, white goods internals)
  • Packaging materials (e.g. thermoformed parts)
  • Lamination
  • Meat packaging (flat, vacuum packs, controlled atmosphere packaging)
  • Roof tile and brick manufacture
  • Food cooling
  • General evacuation duties
  • Coating

nES Single Stage Ex Series

Pompa próżniowa olejowa - Edwards EX-nES630

The Edwards nES single stage EX series represents the next advance in single stage oil sealed rotary vane vacuum pumps for use in explosive environments. Explosive environments Edwards nES single EX series rotary vane pumps have been specifically designed to be capable of handling gases from a potentially explosive atmosphere and to operate in environments where a potentially explosive atmosphere can be present.

Pumps have been certified under the ATEX directive 2014/34/EU.

nES Single Stage Ex series pumps can get peak pumping speed from 44 m3h-1 to 700  m3h-1 and ultimate vacuum from 0,5 mbar to 0,15 mbar.

Features and Benefits
  • Built in sensors and monitoring providing added protection
  • Suitable for a wide range of applications
  • High pumping speed at low pressures
  • Stable vacuum performance with no pressure fluctuation
  • Good condensable vapour handling capability with gas ballast
  • High reliability through proven technology
  • Low noise and vibration• Space efficient through compact design
  • Optimised oil return system and integrated exhaust mist filter
  • Efficient air cooled motor
  • Low and easy maintenance - therefore high productivity
Applications
  • Chemical
  • Pharmaceutical
  • Sterilizing with ethylene oxide
  • Recovery of air conditioning gases
  • Degassing of power plant alternator oil
  • Automotive
  • Gas vapour recovery
  • Gas bottle filling

EM Oil Sealed Rotary Vane Pumps

EM Oil Sealed Rotary Vane Pumps

EM Series pumps are rugged, mechanical oil-sealed pumps in a compact and quiet design. They feature advanced lubrication circuits, high reliability, and accessories to suit your specific application needs. Ideal for dealing with extreme gaseous environments such as pharmaceutical freeze drying or refrigeration system evacuation, the EM series is the industry standard for zero contamination of process and effective lubrication under high gas loads.

Edwards E2M series two stage oil sealed rotary vane vacuum pumps are renowned for their high ultimate vacuum, rapid pumping speeds, quiet operation and ability to handle water vapour. These direct drive rotary vane pumps are inherently compact and vibration free, and with their finger-proof fan and coupling housings they offer excellent operator protection.

A comprehensive range of accessories is available to allow use on a wide variety of vacuum applications. Pumping speeds of either 0.7 to 178 m3h-1

Features and Benefits
  • Reliable and stable process – effective lubrication even under high gas loads
  • No contamination of process – oil and air suck‑back protection
  • Long and trouble free life – industrial roller bearings on drive shaft
  • Peace of mind – tried, tested and industry standard for years. Reliable and stable, high vacuum performance
Applications
  • Vacuum metallurgy processes
  • Thin film coating technologies
  • Pharmaceutical freeze drying
  • Refrigeration and air conditioning system evacuation, drying, and backfilling                                                               
  • Analytical instruments
  • Leak detectors, helium
  • Research and development
  • Backing turbomolecular pumps
  • Laboratory bench top vacuum

RV Rotary Vane Pumps

RV Rotary Vane Pumps

RV oil sealed pumps have been the industry standard rotary vane pump for laboratory applications for many years thanks to design features that make them low cost to operate and maintain versus other rotary pumps. With their unique mode selector, one pump can be used for both high throughput and high vacuum applications.

Selfcentring mechanism, no dowels to set and can replace, any component; high vapour pumping capability and broad range of accessories makes RV pumps the best long term proposition for laboratory applications.

RV rotary vane pumps can get peak pumping speed from 3,3 m3h-1 to 12 m3h-1 and ultimate vacuum to 1.5 x 10-3 mbar. 

Features and benefits
  • Two position gas ballast allows either 60 g/hr or a class leading 220 g/hr (290 g/hr on RV12) of water vapour to be handled
  • Universal motor to cover the widest possible voltage and frequency range from a single motor. A universal 3 phase motor is also available on all models and for special applications, pumps with flameproof ATEX approved motors can be offered
  • Smooth controlled opening by oil pressure to eliminate pressure sur ges, rapid closing within 0.4 seconds of pump stopping
  • Edwards RV pumps are supplied with an initial charge of Ultragrade 19 oil. This premium quality oil has been specifically formulated with a unique package of additives to give the best vacuum performance of any mineral oil
  • The unique mode selector switch means that one pump fits all, so you only need one model for both high throughput and high vacuum applications
  • Designed for easy maintenance
Applications
  • Mass spektrometry
  • Electron microscopy
  • Sample preparation
  • Research and development
  • High energy physics
  • Industrial
  • Chemical

STOKES MICROVAC Rotary Piston Pumps

STOKES MICROVAC Rotary Piston Pumps

The Stokes Microvac rotary piston pump has set the standard for performance, efficiency, reliability and repairability in the industry for over 80 years. The Stokes Microvac J series rotary piston pump has been improved, upgraded, and fine-tuned to deliver even better dependability and productivity combined with minimal maintenance and process downtime. The integral oil distribution system eliminates external pi ping and delivers leak-free operation in a stylised design.

A stylised oil reservoir cover and side cover ‘O’ rings improve sealing to eliminate oil leakage. An integral gas ballast valve built into the side cover allows buick adaptation to automatic gas ballast.

Stokes Microvac rotary piston pump can get peak pumping speed from 234 m3h-1 to 884 m3h-1 and ultimate vacuum to 3.3 x 10-2  mbar.

Features and benefits
  • Robust cast and ductile iron construction provides rugged, reliable operation
  • Efficient design provides maximum uptime with minimal moving parts and large clearance
  • Low ultimate blank-off with maximum speed down to 1 Torr and continuous high pressure pumping up to 600 Torr
  • Space-saving design which saves up to 50% of valuable floor space
  • Automatic lubrication system provides proper flow of oil to bearings and sealing surfaces and prevents back-flow into system
  • Gas ballast as standard
  • Total capability includes the manufacturing and service capabilities to keep your equipment in top operation with a broad range of vacuum system accessories
Application
  • Automotive
  • General applications
  • Metallurgy
  • Vacuum coating
  • Vacuum melting
  • Chemical processing
  • Heat treatment
  • Leak detection
  • PET processing
  • Pharmaceuticals
  • Transformer drying and cable fluid conditioning