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KF (QF) to Male NPT Adapters

Flange to NPT fitting adapters allow the mating of one type of flange system to an NPT fitting. All of our flange to fitting adapters are manufactured from 304 series stainless steel (unless otherwise noted).

Flange to NPT Adapter Types:

  • CF to NPT Female: Zero length style (center-bored CF flange)
  • KF to NPT Male:
    • Flanged stubs terminating in a tapered thread
    • 304 stainless steel
  • KF to NPT Female:
    • Suitable for insertion of an NPT threaded (male) pressure gauge or UTA valve into a foreline.
    • Available in 304 stainless steel, brass and aluminum.
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To contact someone directly, please click here, or call +1 412 387 9200 to get in contact with your dedicated sales team.
Note:
  • Use PTFE tape for sealing threaded joints.

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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 international@lesker.com with your inquiry.

Accessories Table

Description For Per Package
VacuCADSM
Part Number Price In Stock Add Item
Description For Per Package
VacuCADSM
Part Number Price In Stock Add Item
Cast Clamps (SS) KF10, KF16 Flanges 1
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QF16-075-CS
$46.25 In Stock
Cast Clamps (SS) KF25 Flanges 1
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QF25-100-CS
$57.30 In Stock
Cast Clamps (SS) KF40 Flanges 1
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QF40-150-CS
$67.35 In Stock
Cast Clamps (SS) KF50 Flanges 1
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QF50-200-CS
$79.40 In Stock
Lever Clamps (Aluminum) KF10, KF16 Flanges 1
N/A
QF16-075-CHA
$33.20 In Stock
Lever Clamps (Aluminum) KF25 Flanges 1
N/A
QF25-100-CHA
$46.35 In Stock
Lever Clamps (Aluminum) KF40 Flanges 1
N/A
QF40-150-CHA
$54.72 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) KF10 Flanges 1
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QF10-050-SRV
$6.45 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) KF16 Flanges 1
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QF16-075-SRV
$6.75 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) KF25 Flanges 1
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QF25-100-SRV
$8.55 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) KF40 Flanges 1
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QF40-150-SRV
$13.10 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) KF50 Flanges 1
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QF50-200-SRV
$15.10 In Stock
How to Combine Click the checkboxes of the parts you would like to purchase and then click the button below to add all parts selected into your Cart.
Contact Us - KF (QF) to Male NPT Adapters