WL Series: Medium/High Vacuum

WL series


Solberg’s  WL Series medium to high vacuum filters are designed for industrial processes that require a low leak rate and may experience low vacuum pressures. Outfitted with ISO  fittings, the WL Series comes with a range of vacuum-rated flange options and replaceable filter elements for superior protection and system longevity. Housings in this series are 100% helium-leak tested to ensure vacuum integrity and verify leak rates down to 1x 10-5 mbar/l/s or better.


Solberg’s WL Inlet Vacuum Filter Series offers multiple configurations, including:

  • High-Efficiency Filtration
  • Chemical Adsorption
  • High-Temperature Materials of Construction  

Contact us for more information on our WL Series. We are happy to guide you to the right filtration products for your application.

  • Overview
  • Product Documents


NW16 - NW40 Flange Connections:

  • ISO flange connections: Stainless Steel ISO flange & Buna O-ring Sealed

  • Seamless drawn housings
  • Corrosive resistant carbon steel construction
  • Powder coat finish (black models)
  • O-ring housing seal
  • Stainless steel torsion clips

NW16 - NW40 Flange Connections:

  • ISO-K stainless steel flanges standard
  • Machined flange surface to RMS63, uncoated
  • High-quality vacuum service components
  • Corrosive resistant black powder coat carbon steel
  • KF10 differential ports for accurate vacuum ΔP readings

  • Machined & polished sealing surfaces on ISO flange faces for reliable vacuum performance on all flange types

  • K200 housings and larger have domed lid to minimize deflection and increase durability

Technical Specifications:

  • Rated vacuum leak rate of 1x10-5 mbar/l/sec or better (verified by helium leak test)
  • Temp (continuous): min -15°F (-26°C) max 220°F (104°C)
  • Filter change out differential: 28 – 37 Torr over initial ΔP
  • Polyester: 99%+ efficiency to 5 micron


NW16 - NW40 Flange Connections:

  • Contact factory for larger sizes & ISO flanges
  • Viton seals
  • Stainless steel (select models)
  • Activated alumina, activated zeolite media available for foreline trap and other applications

K100 - K320 Connections:

  • Filter media options available to meet strict process requirements: PTFE, PTFE Glass, SS mesh, and more
  • If required, tanks can be tested to a lower leak rate


  • Rotary Vane Vacuum Pumps



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