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CF to 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
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 2.00" Long Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 6" (DN100CF) Nipples 25
(please log in)
HBS31224200
$33.20 In Stock
Gasket, Copper, DN16CF (1.33" OD) Flange , 0.837" OD, 0.640" ID, (10) Per Package 1-1/3" (DN16CF) Nipples 10
(please log in)
GA-0133
$21.05 In Stock
Gasket, Copper, DN35CF-DN40CF (2.75" OD) Flange, 1.895" OD, 1.451" ID, (10) Per Package 2-3/4" (DN35-DN40CF) Nipples 10
(please log in)
GA-0275
$27.35 In Stock
Gasket, Copper, DN35CF-DN40CF (2.75" OD) Flange, Large Bore, 1.895" OD, 1.528" ID, (10) Per Package 2-3/4" (DN35-DN40CF) Nipples 10
(please log in)
GA-0275LB
$27.35 In Stock
Socket Head Cap Screw & Nut Set, Stainless Steel, DN16CF (1.33" OD) Flange, (25) 8-32 x 0.75" Long Socket Head Cap Screws & (25) Hex Nuts 1-1/3" (DN16CF) Nipples 25
N/A
SBS832075S4-25
P.O.R. In Stock
Gasket, Copper, DN25 (2.125" OD) Flange, 1.291" OD, 1.010" ID, (10) Per Package 2-1/8" (DN25CF) Nipples 10
(please log in)
GA-0212
$24.05 In Stock
Gasket, Copper, DN50CF (3.375" OD) Flange, 2.425" OD, 2.010" ID, (10) Per Package 3-3/8" (DN50CF) Nipples 10
(please log in)
GA-0337
$31.10 In Stock
Gasket, Copper, DN63CF (4.50" OD) Flange, 3.243" OD, 2.506" ID, (10) Per Package 4-1/2" (DN63CF) Nipples 10
(please log in)
GA-0450
$37.20 In Stock
Gasket, Copper, DN75CF (4.625" OD) Flange, 3.598" OD x 3.010" ID, (10) Per Package 4-5/8" (DN75CF) Nipples 10
(please log in)
GA-0462
$44.25 In Stock
Gasket, Copper, DN100CF (6.00" OD) Flange, 4.743" OD,4.006" ID, (10) Per Package 6" (DN100CF) Nipples 10
(please log in)
GA-0600
$55.30 In Stock
Gasket, Copper, DN125CF (6.75" OD) Flange, 5.567" OD x 5.010" ID, (10) Per Package 6-3/4" (DN125CF) Nipples 10
(please log in)
GA-0675
$66.35 In Stock
Gasket, Copper, DN160CF (8.00" OD) Flange, 6.743" OD, 6.007" ID, (10) Per Package 8" (DN160CF) Nipples 10
(please log in)
GA-0800
$78.40 In Stock
Gasket, Copper, DN200CF (10.00" OD) Flange, 8.743" OD, 8.007" ID, (10) Per Package 10" (DN200CF) Nipples 10
(please log in)
GA-1000
$96.50 In Stock
Gasket, Copper, DN275CF (13.25" OD) Flange, 11.590" OD, 10.845" ID, (1) Per Package 13-1/4" CF Nipples 1
(please log in)
GA-1325
$54.30 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 1/4-28 x 1.38" Long Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 2-1/8" (DN25CF) Nipples 25
(please log in)
HBS25028138
$30.50 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 1/4-28 x 1.38" Long Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 2-3/4" (DN35-DN40CF) Nipples 25
(please log in)
HBS25028138
$30.50 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 1.75" Long Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 3-3/8" (DN50CF) Nipples 25
(please log in)
HBS31224175
$39.20 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 2.00" Long Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 4-1/2" (DN63CF) Nipples 25
(please log in)
HBS31224200
$33.20 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 2.00" Long Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 4-5/8" (DN75CF) Nipples 25
(please log in)
HBS31224200
$33.20 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 2.25" Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 6-3/4" (DN125CF) Nipples 25
(please log in)
HBS31224225
$39.20 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 2.25" Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 8" (DN160CF) Nipples 25
(please log in)
HBS31224225
$39.20 In Stock
Hex,bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 2.50" Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 10" (DN200CF) Nipples 25
(please log in)
HBS31224250
$30.05 Contact KJLC for Availability
Hex Bolt, Nut & Washer Set, Stainless Steel, (30) 3/8-24 x 3.00" Hex Bolts, (30) Hex Nuts, & (60) Flat Washers 13-1/4" CF Nipples 30
N/A
HBS37524300
$48.25 In Stock
Thread Lubricant, 4 Ounce Tube All CF Nipples 1
N/A
VZTL-4OZ
P.O.R. In Stock
Gasket Removal Tool, For All Conflat (CF) Flange Sizes All CF Nipples 1
N/A
VZGRT
$38.20 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 - CF to NPT Adapters