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Stainless Steel Ball Valves (Pneumatic)

Intended for high- and course-vacuum service.

  • Leak rate is less than 1x10-9 std. cc/sec. He.
  • Feature PTFE seats and fluorocarbon seals, both easily replaceable without demounting
  • When open, valves have an unrestricted bore, giving high gas conductance and making them useful in low-cost sample entry locks
  • When closed, main bore is pumped through a side vent hole

Specifications Table

Manufacturer KJLC
Pressure Torr
Min: 1.000 x 10-8 Torr
Max: 760 Torr

Min: 1.330 x 10-8 mbar
Max: 1013 mbar

Rates Helium Leak Rate
1.010 x 10-9 mbar*L/s
1.000 x 10-10 Pa*m^3/s
1.000 x 10-9 sccs
7.600 x 10-10 Torr*L/s
Temperature Bakeable
150 ºC
302 ºF

Intermittent Bake
200 ºC
392 ºF

Shaft Seal
Valve Body
316L SS
Valve Seal
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+1 800 245 1656
  • special case note
    Ball valves can be very "stiff" upon initial operation, this is normal.

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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 - Stainless Steel Ball Valves (Pneumatic)