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Home > Fittings and Flanges > KF to KF Fittings > Blank Flange > Blank Flange KF-25 Vacuum Fittings, ISO-KF Flange Size NW-25, Stainless Steel
Blank Flange KF-25 Vacuum Fittings, ISO-KF Flange Size NW-25, Stainless Steel
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Blank Flange KF-25 Vacuum Fittings, ISO-KF Flange Size NW-25, Stainless Steel

These KF-25 Blank Flange fittings follow ISO-KF standards and have a flange size of NW-25. They are commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel.

Blank Flange
ISO-KF Flange Size: NW-25
Common Dimensions: A=.20" (5mm)
Product: Blank Flange KF-25 Vacuum Fittings, ISO-KF Flange Size NW-25, Stainless Steel
Condition: New
Warranty: Against Product Defect
Part Number: P101203
Sale Price: $8.30
QTY:   
ADDITIONAL INFORMATION:

Hinge Clamp
NW16 NW25
NW40 NW50
Blank Off
NW16 NW25
NW40 NW50
Tee
NW16 NW25
NW40 NW50
KF to Female NPT
NW16 NW25
NW40 NW50
Centering Ring
NW16 NW25
NW40 NW50
Stub Blank
NW16 NW25
NW40 NW50
4 Way Cross
NW16 NW25
NW40 NW50
KF to Rubber Hose
NW16 NW25
NW40 NW50
O-Ring Replacement
NW16 NW25
NW40 NW50
KF to KF Reducer
NW16 NW25
NW40 NW50
Weld Socket Flange
NW16 NW25
NW40 NW50
KF to NPT Male
NW16 NW25
NW40 NW50
Elbow 45°
NW16 NW25
NW40 NW50
Elbow 90°
NW16 NW25
NW40 NW50
Blank with Bore
NW16 NW25
NW40 NW50
KF to Welch Adapter
NW16 NW25
NW40 NW50
Center Ring Overpressure
NW16 NW25
NW40 NW50
Full Nipple Straight
NW16 NW25
NW40 NW50
Half Nipple Short Weld Stub
NW16 NW25
NW40 NW50
KF to CF Adapter
NW16 NW25
NW40 NW50
Flex Coupling Bellows
NW16 NW25
NW40 NW50
KF Tee Reducer
NW16 NW25
NW40 NW50
Adaptive Centing Ring
NW16 NW25
NW40 NW50
KF Tee to NPT Female
NW16 NW25
NW40 NW50
Half Nipple Long Weld Stub
NW16 NW25
NW40 NW50
KF View Port
NW16 NW25
NW40 NW50
KF to LF Flange
NW16 NW25
NW40 NW50
KF to Leak Detector Port
NW16 NW25
NW40 NW50
KF to VCR Male
NW16 NW25
NW40 NW50
compression Port to KF
NW16 NW25
NW40 NW50
KF to VCR Female
NW16 NW25
NW40 NW50
KF to ASA
NW16 NW25
NW40 NW50
KF to PVC Adapter
NW16 NW25
NW40 NW50
KF Manual Valve
NW16 NW25
NW40 NW50
Reinforced Vacuum Hose
NW16 NW25
NW40 NW50
KF Mist Filter
NW16 NW25
NW40



ISO-KF is a designation for a small clamped connection with interface dimensions made to International Standards Organization (ISO) specifications. ISO-KF connections are less than 2" inner diameter. KF is a German acronym for "Kleinflansch" or "small flange". The NW size of the flange is from another German acronym for "Nenn Weite" or "nominal diameter", usually referring to vacuum tubing internal diameter. There is a large family of ISO-KF vacuum fittings and components, which include elbows, tees, crosses, bellows, etc.