Everything You Need To Know About Flange Systems
Flange The flange is semitransparent connections to join the parts in vacuum technology. • It is frequently or occasionally disassembled. • The flange is light enough to be moved with available equipment. • It cannot be welded due to heat sensitivity or replacement requirements. Flange Designs • Formal Standards: For instance, ISO, KF/QF/NW/ASA/ANSI Flanges • De Facto Standards: For instance, CF Flanges CF and ISO/KF These types flanges are low cost, highly convenient that are widely available as they predominate in practical vacuum systems. The flanges are available in vacuum flange manufacturers. CF Flanges The design CF is originally called ConFlat flanges. Typically, the materials are: austenitic stainless steel types such as 304L, 316L, 3016LN & surfaced hardened aluminium. It comes with four distinct versions: • • • •
Fixed Flange Rotatable Flange Throughhole Flange Tapped Flange
CF Flange Gaskets • It determines the joint's maximum temperature and to an extent & the base pressure of the vacuum volume. It is available in vacuum flange manufacturers. • Alumunium flanges must use aluminium gaskets but never copper. • The aluminium gasket can be used stainless steel CF flanges when baking is restricted to 200 degrees Celsius. CF Flange Hardware • For CF flange applications, the regular nuts & bolts are not suitable. • It is highly recommended that – nut, bolt & platenut combinations are lubricated. • Types: Hex Head, 12Point, Metric, Studs & Threads Rods & Plate Nuts KF(QF) Flanges • It is made from 304L & 316L stainless, aluminium & brass. • KF Flanges are limited to applications with temperature between 0° and 120180° • KF (Klein Flansche) was adopted by ISO, DIN. • It is also called as QF, NW & occasionally DIN. ISO Flanges • This is also called as Large ISO. It has a sexless design & is made from 304L stainless steel or aluminium. • The design principles of both ISO & KF seals are identical. • Two Flanges types: ISOK flanges & ISOF flanges
ASA Flanges • The type of flange is simple, sexed & vacuum seals. • It is made from 304L stainless steel and weldable aluminium alloy. • They are limited to applications with temperatures between 0° and 120180° • For instance, large bore flanges & bolt holes. Vacuum Gasket • The gasket is required to achieve a vacuum seal. • Elastomeric Oring Gasket: It can be made of Buna rubber, Silicone Rubber or Teflon. • Orings: It can be placed in the groove. It may be used in a combination with a centering ring. • Copper Ring Gasket: It is used with Conflat flanges. • Metal Wire Gaskets: They are made of gold, copper & indium. Vacuum Feedthrough • A type of flange, which contains a vacuumtight electrical & physicalmechanical connection to the vacuum chamber. • It allows voltage to be applied to the components under vacuum. Typically, this is for rotation & translation of the components under vacuum. Fittings • Vacuum fittings are conveniently shaped & flanged devices, which can be assembled into complete vacuum envelopes. • The common construction material for fittings is stainless steel & aluminium. Fittings are available in 316 stainless. • Name of Fittings: HalfNipple, FullNipple, Elbows, Tees & Crosses & Cubes. To know more about vacuum & CNC turned manufactures, visit http://www.sainiflange.co.in/ Call us on +91 130 2219623/ +91 99 117 57222 Email us at info@sainiflange.co.in