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KF Flanged Aluminum Nitrile Diaphragm Valve (Manual)

Offer high tolerance for dirty systems at a relatively low cost.

  • Maximum leak rate of <1 x 10-6 mbar ls-1
  • Works best in the pressure range 10,000 - 1 x 10-5 mbar
  • Withstands bakeouts to 60° C
  • Nitrile and Fluorocarbon diaphragm versions are available

Techniques, such as Finite Element Analysis, are used to optimize the design of these valves, while testing each valve with a helium mass spectrometer ensures it meets stringent specification standards.

Specifications Table

Manufacturer Edwards
Pressure Torr
Min: 7.500 x 10-6 Torr
Max: 6750 Torr

Min: 1.000 x 10-5 mbar
Max: 9000 mbar

131 PSI
Rates Leak Rate
1.000 x 10-5 mbar*L/s
7.500 x 10-6 Torr*L/s
Temperature Bakeable
60.0 ºC
140 ºF

Seal Type
Glass Reinforced Plastic
Valve Body
Aluminum Alloy
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+1 800 245 1656
  • special case note
    The KF40 versions are available for pipeline mounting only and the smaller sizes can be panel mounted using the tapped holes provided.

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Ordering Table

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Flange Selection Guide
With a variety of flanges to choose from, the Flange Selection Guide is designed to help you find one to meet your vacuum requirements. Shop Now!
Can't find the flange you need or want a custom configuration? Please call us at +1 800 245 1656 or email with your inquiry.
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Contact Us - KF Flanged Aluminum Nitrile Diaphragm Valve (Manual)