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Manual Bellows Sealed SS Angle Valves (KF flanged)

Reliable, economical, general-purpose components for HV and UHV applications requiring cleanliness and corrosion resistance.

In the open position

  • Edge-welded bellows and valve seat move out of the gas path thereby achieving high conductance


  • Feature fluorocarbon o-ring seat seals, bellows-sealed shafts, and bonnet seals (select copper for higher temperature bakeout and better ultimate vacuum)
  • Normal repairs can be made without removing the valve body from the system

Specifications Table

Manufacturer KJLC
Pressure Torr
7.520 x 10-9 Torr
1.000 x 10-8 mbar
Rates Leak Rate
2.000 x 10-9 mbar*L/s
1.500 x 10-9 Torr*L/s
Temperature Actuator
80.0 ºC
176 ºF

Closed Bake
100 ºC
212 ºF

Open Bake
100 ºC
212 ºF

Seal Type
Valve Body
304L SS
Welded Bellows
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Questions? Let's Talk!
Contact your dedicated Lesker sales team today.
+1 800 245 1656
  • special case note
    We list a wide variety of standard tube sizes from 3/8" to 4". Other sizes and valves with mixed flanges are available on request.

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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 - Manual Bellows Sealed SS Angle Valves (KF flanged)