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ISO Flanged Al Fluorocarbon Bonnet Gate Valves (Manual)


  • Easy-to-maintain bonnet design (an operator, without special tools or training, can replace every moving part in the bonnet style valve in five minutes while the valve port stays in the system to support the pump and vacuum lines)
  • He rates of less than 2 x 10-9 std cc/sec.
  • A high-conductance large port with ISO or ASA flanges (JIS flanges available, call us for details)
  • Withstand bakeout to 150° C when equipped with fluorocarbon O-rings and in the open position
  • Made of 6061 aluminum
  • Pneumatic valves feature a 120VAC solenoid operator at no extra charge (other voltages, both AC and DC, available on request)

Valve Neck Style Legend

  • N1 Style — Tapped holes on seal side and open side
  • N5 Style — Neck on seal side and open side
  • N6 Style — Neck on seal side only
  • N8 Style — Neck on open side (opposite seal side) only

Specifications Table

Manufacturer KJLC
Rates Helium Leak Rate
5.050 x 10-10 mbar*L/s
5.050 x 10-9 Pa*m^3/s
5.000 x 10-10 sccm
3.788 x 10-8 Torr*L/s
Temperature Open Bake
150 ºC
302 ºF

Shaft Seal
Seal Type
Valve Body
6061-T6 Aluminum
Valve Seal
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  • Valves listed use a fluorocarbon o-ring for the gate seal and Buna-N o-rings for all other locations. We can supply gate valves with one or several roughing ports in a variety of locations. Please call to specify. We recommend using these valves only to 150° C in the closed position because of the performance of the o-rings.

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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 +1 412 387 9200 or email with your inquiry.
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Contact Us - ISO Flanged Al Fluorocarbon Bonnet Gate Valves (Manual)