What is CF flange?
ConFlat (CF) fittings are flanges which utilize metal seals to attain vacuum conditions. The combination of a stainless-steel knife-edge flange and a copper gasket (OFHC) makes for a nearly impenetrable vacuum barrier. CF flanges use a series of bolts, unlike other vacuum seals that use clamps and elastomers.
How to tighten CF flange?
Apply a wrench to both the bolt head and the nut. Tighten by turning the nuts in small increments (1/2 turn or less) using the alternating pattern shown in the diagram, choosing a bolt across the flange from the last. Continue the incremental tightening of the nuts until the desired torque pressures have been achieved.
How do CF flanges work?
CF (ConFlat) flanges use an oxygen-free high thermal conductivity copper gasket and knife-edge flange to achieve an ultrahigh vacuum seal. Each face of the two mating CF flanges has a knife edge, which cuts into the softer metal gasket, providing an extremely leak-tight, metal-to-metal seal.
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 ISO KF?
What is a ConFlat fitting?
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. CF fittings can be supplied with both threaded and through-bolt holes, depending on the application.
What is a KF fitting?
KF HV flanges (Figure 1) are a sexless design—made from 304L or 316L stainless, aluminum, or brass. The seal is a rubber/ elastomeric o-ring mounted in a centering ring, which aligns the flanges and holds the o-ring in position.
What is KF clamp?
ISO-KF Vacuum Flange Components. ISO-KF Vacuum Flange Clamps.
What is an LF flange?
ISO – KF Flanges, LF Flanges This is the standard high vacuum sealing method used throughout the industrial and scientific vacuum communities. LF Style flanges have groves in the top that accommodate the use of Claw Clamps and bolts to tighten the flange to the centering ring , ultimately making the vacuum seal.
What kind of gaskets are used for CF flanges?
Metal gaskets, ceramic feedthroughs and bakeable obser- vation windows are used exclusi vely. For applications in the extreme UHV range (XHV) the outgassing rate of the CF flanges and the UHV components can be reduced by about two orders of magnitude by a special degassing process.
Can a Din flange be connected to an ISO F flange?
ISO-F / DIN Fixed Bolted Flange Fittings With the appropriate collar flanges, the clamp flange can be connected to various fixed bolted flange systems (ISO-F, DIN EN 1092-1, etc.) see figures in chapter “ISO-F and DIN EN 1092-1 Fixed Flange Fittings”. CF Flanges and Components
What are the different types of collar flanges?
Clamped flange connection with collar flanges 1 ISO-K flanges 2 Vacuum sealing disk consisting of centering ring and O-ring with outer support ring 3 Retaining rings 4 ISO-F collar flanges 5 Bolt with nut ISO-F / DIN Fixed Bolted Flange Fittings
What is ultra high vacuum in flanges and fittings?
General to Flange and Fittings Introduction According to DIN 28400, the term “Ultra-high Vacuum (UHV)” designates the pressure range below 10-7mbar.