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WL Series: Medium to High Vacuum

Solberg’s WL Series medium to high vacuum filters are designed for industrial and Semicon processes that require a verified leak rate and operate in medium to high vacuum conditions. The WL Series has various vacuum-specific connection options, including ISO vacuum fittings and numerous filter media options for superior protection and system longevity. Housings in this series are 100% helium-leak tested to ensure vacuum integrity with verified leak rates of 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.

  • WL Series Family
  • WL Diagram
WL Series Family
OVERVIEW, DOCUMENTS, AND MORE
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Model Inlet Connection Size Outlet Connection Size Connection Type Flow (SCFM) Dim A (in.) Dim B (in.) Dim C (in.) Dim D (in.) Dim E (in.) Holding Capacity (gal) Media Micron Rating Replacement Element SelectorConnectionSizeImperial SelectorMediaType
WL-235P-K100 K100 K100 ISO Flange 520 28.19 9.00 12.25 18.50 Polyester 5.0 235P K100-K320 Polyester Add To Cart
WL-238-K100B K100 K100 ISO Flange 520 16.18 9.31 13.25 9.14 Paper 2.0 238 K100-K320 Paper Add To Cart
WL-239-K100B K100 K100 ISO Flange 520 16.18 9.31 13.25 9.14 Polyester 5.0 239 K100-K320 Polyester Add To Cart
WL-275P-K160 K160 K160 ISO Flange 1100 30.19 12.00 16.25 20.50 Polyester 5.0 275P K100-K320 Polyester Add To Cart
WL-335P-K100 K100 K100 ISO Flange 520 28.19 9.00 12.25 18.50 Polyester 5.0 335P K100-K320 Polyester Add To Cart
WL-375P-K160 K160 K160 ISO Flange 1100 30.19 12.00 16.25 20.50 Polyester 5.0 375P K100-K320 Polyester Add To Cart
WL-377P-K200 K200 K200 ISO Flange 1800 44.00 14.00 20.38 25.50 Polyester 5.0 377P K100-K320 Polyester Add To Cart
WL-385P-K250 K250 K250 ISO Flange 2900 53.69 16.13 24.38 34.00 Polyester 5.0 385P K100-K320 Polyester Add To Cart
WL-485P-K320 K320 K320 ISO Flange 4670 53.69 16.13 24.38 34.00 Polyester 5.0 485P K100-K320 Polyester Add To Cart
WL-685P-K320 K320 K320 ISO Flange 4953 64.88 16.13 24.38 45.00 Polyester 5.0 685P K100-K320 Polyester Add To Cart
WL-824-NW16B NW16 NW16 ISO Flange 23 3.88 2.63 3.75 2.25 Paper 2.0 824 NW16-25 Paper Add To Cart
WL-824-NW16EN NW16 NW16 ISO Flange 23 3.88 2.63 3.75 2.25 Paper 2.0 824 NW16-25 Paper Add To Cart
WL-824-NW25B NW25 NW25 ISO Flange 25 3.88 2.63 3.75 2.25 Paper 2.0 824 NW16-25 Paper Add To Cart
WL-824-NW25EN NW25 NW25 ISO Flange 25 3.88 2.63 3.75 2.25 Paper 2.0 824 NW16-25 Paper Add To Cart
WL-825-NW16B NW16 NW16 ISO Flange 23 3.88 2.63 3.75 2.25 Polyester 5.0 825 NW16-25 Polyester Add To Cart
WL-825-NW16EN NW16 NW16 ISO Flange 23 3.88 2.63 3.75 2.25 Polyester 5.0 825 NW16-25 Polyester Add To Cart
WL-825-NW25B NW25 NW25 ISO Flange 25 3.88 2.63 3.75 2.25 Polyester 5.0 825 NW16-25 Polyester Add To Cart
WL-825-NW25EN NW25 NW25 ISO Flange 25 3.88 2.63 3.75 2.25 Polyester 5.0 825 NW16-25 Polyester Add To Cart
WL-842-NW25B NW25 NW25 ISO Flange 35 4.38 3.38 5.75 2.75 Paper 2.0 842 NW16-25 Paper Add To Cart
WL-842-NW25EN NW25 NW25 ISO Flange 35 4.38 3.38 5.75 2.75 Paper 2.0 842 NW16-25 Paper Add To Cart
WL-842-NW40B NW40 NW40 ISO Flange 55 4.38 3.38 5.75 2.75 Paper 2.0 842 NW40-K63 Paper Add To Cart
WL-842-NW40EN NW40 NW40 ISO Flange 55 4.38 3.38 5.75 2.75 Paper 2.0 842 NW40-K63 Paper Add To Cart
WL-843-NW25B NW25 NW25 ISO Flange 35 4.38 3.38 5.75 2.75 Polyester 5.0 843 NW16-25 Polyester Add To Cart
WL-843-NW25EN NW25 NW25 ISO Flange 35 4.38 3.38 5.75 2.75 Polyester 5.0 843 NW16-25 Polyester Add To Cart
WL-843-NW40B NW40 NW40 ISO Flange 55 4.38 3.38 5.75 2.75 Polyester 5.0 843 NW40-K63 Polyester Add To Cart
WL-843-NW40EN NW40 NW40 ISO Flange 55 4.38 3.38 5.75 2.75 Polyester 5.0 843 NW40-K63 Polyester Add To Cart
WL-848-NW40B NW40 NW40 ISO Flange 80 7.19 4.63 7.38 5.00 Paper 2.0 848 NW40-K63 Paper Add To Cart
WL-848-NW40EN NW40 NW40 ISO Flange 80 7.19 4.63 7.38 5.00 Paper 2.0 848 NW40-K63 Paper Add To Cart
WL-849-NW40B NW40 NW40 ISO Flange 80 7.19 4.63 7.38 5.00 Polyester 5.0 849 NW40-K63 Polyester Add To Cart
WL-849-NW40EN NW40 NW40 ISO Flange 80 7.19 4.63 7.38 5.00 Polyester 5.0 849 NW40-K63 Polyester Add To Cart
WL-850-K63B K63 K63 ISO Flange 210 11.50 6.00 7.68 6.50 Paper 2.0 850 NW40-K63 Paper Add To Cart
WL-851-K63B K63 K63 ISO Flange 210 11.50 6.00 7.68 6.50 Polyester 5.0 851 NW40-K63 Polyester Add To Cart
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Model Inlet Connection Size Outlet Connection Size Connection Type Flow (m3/hr) Dim A (mm) Dim B (mm) Dim C (mm) Dim D (mm) Dim E (mm) Holding Capacity (gal) Holding Capacity (L) Media Micron Rating Replacement Element SelectorConnectionSizeMetric SelectorMediaType
WL-235P-K100 K100 K100 ISO Flange 885 716.00 229.00 311.00 470.00 Polyester 5.0 235P K100-K320 Polyester Add To Cart
WL-238-K100B K100 K100 ISO Flange 883 411.00 236.00 337.00 232.00 Paper 2.0 238 K100-K320 Paper Add To Cart
WL-239-K100B K100 K100 ISO Flange 883 411.00 236.00 337.00 232.00 Polyester 5.0 239 K100-K320 Polyester Add To Cart
WL-275P-K160 K160 K160 ISO Flange 1870 767.00 305.00 413.00 521.00 Polyester 5.0 275P K100-K320 Polyester Add To Cart
WL-335P-K100 K100 K100 ISO Flange 885 716.00 229.00 311.00 470.00 Polyester 5.0 335P K100-K320 Polyester Add To Cart
WL-375P-K160 K160 K160 ISO Flange 1870 767.00 305.00 413.00 521.00 Polyester 5.0 375P K100-K320 Polyester Add To Cart
WL-377P-K200 K200 K200 ISO Flange 3060 1116.00 356.00 518.00 648.00 Polyester 5.0 377P K100-K320 Polyester Add To Cart
WL-385P-K250 K250 K250 ISO Flange 4930 1364.00 410.00 619.00 864.00 Polyester 5.0 385P K100-K320 Polyester Add To Cart
WL-485P-K320 K320 K320 ISO Flange 7935 1364.00 410.00 619.00 864.00 Polyester 5.0 485P K100-K320 Polyester Add To Cart
WL-685P-K320 K320 K320 ISO Flange 8415 1648.00 410.00 619.00 1143.00 Polyester 5.0 685P K100-K320 Polyester Add To Cart
WL-824-NW16B NW16 NW16 ISO Flange 40 99.00 67.00 95.00 57.00 Paper 2.0 824 NW16-25 Paper Add To Cart
WL-824-NW16EN NW16 NW16 ISO Flange 40 99.00 67.00 95.00 57.00 Paper 2.0 824 NW16-25 Paper Add To Cart
WL-824-NW25B NW25 NW25 ISO Flange 43 99.00 67.00 95.00 57.00 Paper 2.0 824 NW16-25 Paper Add To Cart
WL-824-NW25EN NW25 NW25 ISO Flange 43 99.00 67.00 95.00 57.00 Paper 2.0 824 NW16-25 Paper Add To Cart
WL-825-NW16B NW16 NW16 ISO Flange 40 99.00 67.00 95.00 57.00 Polyester 5.0 825 NW16-25 Polyester Add To Cart
WL-825-NW16EN NW16 NW16 ISO Flange 40 99.00 67.00 95.00 57.00 Polyester 5.0 825 NW16-25 Polyester Add To Cart
WL-825-NW25B NW25 NW25 ISO Flange 43 99.00 67.00 95.00 57.00 Polyester 5.0 825 NW16-25 Polyester Add To Cart
WL-825-NW25EN NW25 NW25 ISO Flange 43 99.00 67.00 95.00 57.00 Polyester 5.0 825 NW16-25 Polyester Add To Cart
WL-842-NW25B NW25 NW25 ISO Flange 60 111.00 86.00 146.00 70.00 Paper 2.0 842 NW16-25 Paper Add To Cart
WL-842-NW25EN NW25 NW25 ISO Flange 60 111.00 86.00 146.00 70.00 Paper 2.0 842 NW16-25 Paper Add To Cart
WL-842-NW40B NW40 NW40 ISO Flange 94 111.00 86.00 146.00 70.00 Paper 2.0 842 NW40-K63 Paper Add To Cart
WL-842-NW40EN NW40 NW40 ISO Flange 94 111.00 86.00 146.00 70.00 Paper 2.0 842 NW40-K63 Paper Add To Cart
WL-843-NW25B NW25 NW25 ISO Flange 60 111.00 86.00 146.00 70.00 Polyester 5.0 843 NW16-25 Polyester Add To Cart
WL-843-NW25EN NW25 NW25 ISO Flange 60 111.00 86.00 146.00 70.00 Polyester 5.0 843 NW16-25 Polyester Add To Cart
WL-843-NW40B NW40 NW40 ISO Flange 94 111.00 86.00 146.00 70.00 Polyester 5.0 843 NW40-K63 Polyester Add To Cart
WL-843-NW40EN NW40 NW40 ISO Flange 94 111.00 86.00 146.00 70.00 Polyester 5.0 843 NW40-K63 Polyester Add To Cart
WL-848-NW40B NW40 NW40 ISO Flange 136 183.00 118.00 187.00 127.00 Paper 2.0 848 NW40-K63 Paper Add To Cart
WL-848-NW40EN NW40 NW40 ISO Flange 136 183.00 118.00 187.00 127.00 Paper 2.0 848 NW40-K63 Paper Add To Cart
WL-849-NW40B NW40 NW40 ISO Flange 136 183.00 118.00 187.00 127.00 Polyester 5.0 849 NW40-K63 Polyester Add To Cart
WL-849-NW40EN NW40 NW40 ISO Flange 136 183.00 118.00 187.00 127.00 Polyester 5.0 849 NW40-K63 Polyester Add To Cart
WL-850-K63B K63 K63 ISO Flange 357 292.00 152.00 195.00 165.00 Paper 2.0 850 NW40-K63 Paper Add To Cart
WL-851-K63B K63 K63 ISO Flange 357 292.00 152.00 195.00 165.00 Polyester 5.0 851 NW40-K63 Polyester Add To Cart
  • Overview
  • Product Documents
  • Alternative Solutions

Features

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

K100 - K320 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

Options

NW16 - NW40 Flange Connections:‚Äč

  • 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
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