Model Drawings, CAD & Specs Availability Price
Vacuum Isolation Valve, Single Stage, Low Profile, Aluminum Body


  • Type
    Low Profile Compact Aluminum Body Vacuum Valve
  • Vacuum Range
    Atmosphere to 1.0 x 10-9 Torr
  • Body Configuration
    NW25, NW40, NW50
  • Port Size
    NW25, NW40, NW50
  • Helium Leak Rate
    1.0 x 10-9 std cc/sec
  • Actuation
    Opening: 0.12 - 0.45 seconds
    Closing: 0.18 - 1.13 seconds
    depending on configuration
  • Cylinder Volume
    1.2 - 6.4 in3, depending on configuration
  • Cylinder Air Pressure
    90 psig ± 30 psig
  • Limit Switch Rating
    5A - 250 VAC
  • Single Pole, Single Throw
    5A - 30 VDC
  • Blow-By Pressure
    80 - 45 psia, depending on configuration
  • Maximum Internal Spring Closing Pressure
    38 - 60 psia, depending on configuration
  • Typical Life
    1,000,000 cycles


One-piece Machined Aluminum Body

Another standard feature is a one-piece machined aluminum body made of high grade, corrosion resistant, 6061-T6 Aluminum for significantly fewer entrapment areas, resulting in less contaminant build-up. In the event of power or air loss, the pneumatic LoPro Valve will automatically spring to close. Actuation can be pneumatic or manual.

LoPro™ Aluminum Valve Options

The LoPro Valve is available in both angle and inline versions. Port sizes include outside diameters of 1, 1½, and 2 inches and standard port interfaces include KF flanges. For leak-tight operation, elastomer seals are available in Viton® for typical vacuum operating conditions, and in Kalrez® or Chemraz® for higher temperature conditions and increased chemical resistance.

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