What is a KF flange?

What is a KF flange?

KF flanges are ISO-standardized vacuum fittings that provide a vacuum seal by compressing a rubber O-ring between two mating surfaces. Also referred to as NW, QF, or DN flanges, KF flanges are ideal for quickly assembling vacuum systems thanks to their ease of use, maintenance, and reusability.

What is a KF 16 fitting?

KF-16 T Fitting These KF-16 T fittings follow ISO-KF standards and have a flange size of NW-16. They are most often used for foreline vacuum plumbing and process systems, often called quick flange fittings because they are quick to assemble.

Are KF and NW flanges the same?

NW (also known as KF & QF) NW Vacuum Hardware is known also as KF and QF. NW Vacuum Flanges and Fittings are quick release and are great in rough vacuum to high vacuum applications. NW Fittings are quick and easy to use and assemble into a vacuum system.

What is ISO-KF?

The ISO-KF system is a family of small vacuum components up to 2” that include flanges, elbows, tees and crosses. The International Standards Organization (ISO) defines the interface dimensions, allowing the interchanging of components that conform to the standard’s dimensions.

What is KF connection?

ISO-KF Connection. The ISO-KF connection (to DIN 28 403 and ISO 2861) permits rapid fitting and replacement of components in vacuum systems. It consists of two symmetrical ISO-KF flanges (1), a cen- tering ring with O-ring gasket (2) and a clamping ring (3).

What are KF vacuum fittings?

KF Vacuum Fittings Overview KF flanges utilize an aluminium clamp with a single wingnut fastener allowing frequent disassembly without tools. The vacuum seal is effected by uniform applications of pressure by the clamp on the 15° surface of the flange.

What is ISO flange?

ISO HV Flanges (also called Large ISO) have a sexless design and are made from 304L stainless or aluminum. The design principles of ISO and KF seals are identical. Each flange face is counter-bored or grooved to receive a metal centering ring with an elastomeric o-ring around its O.D.

What is CF flange?

ConFlat (CF) fittings are flanges that use –metal seals to achieve vacuum conditions. The combination of a copper gasket (OFHC) and a stainless steel knife-edge flange makes for an almost impenetrable vacuum barrier.

What is a CF flange?

What does DN and PN mean?

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What is PN 40?

PN10, PN16, PN25 and PN40 specify both pressure class in bars of pressure, and metric flange dimensions (such as bolt circle diameter, hole size, bolt size etc) according to international flange standards such as ISO 7005-1 or DIN 2501 that use the metric system of measurements.

What is PN 40 pressure rating?

PN stands for Nominal Pressure and roughly equates to the number of bar i.e. the cold working pressure of PN10 is 10 bar. Ratings range from PN2. 5 to PN420….Overview.