Vacuum components are important parts of vacuum technology. These are all components of vacuum equipment which are necessary for the assembly of vacuum lines, e. g. flanges, seals and tube components (elbows, tees, crosses etc.). Applications in vacuum technology make high demands on the selection of material as well as the fabrication of these components.
Varied fields of application require different connection standards which are based on different flange systems. Therefore, Everfit Technology CO., LTD. (EFT ) offers vacuum components of all important standards. Our product range covers a vast selection of standard vacuum components.
EFT also specialises in the manufacture of vacuum components to your precise requirements. Please find more detailed information in Vacuum Custom Components product pages.
KF Flange Series
The Small flange or KF standard (DIN 28403, ISO 2961) is the standard connection for vacuum pipes up to the nominal diameter of DN50 used in low, fine and high vacuum. A seal is positioned between the flanges. The seal consists of a centering ring and the O-ring stretched upon. The flanges are held together by a clamp. The clamp has an inclined interior surface adequate to the conical outer surface of the flanges. Usually centering rings and standard clamps are used with wing nuts. They enable a quick and easy assembly without any tools. Trapped centering rings and special clamps or clamp chains are offered for special applications. Claw clamps or so-called bulkhead clamps are available for wall mounting.
ISO Flange Series
ISO KF vacuum systems employ components with metric interface dimensions which have been defined by the International Standards Organisation (ISO).This ensures a high degree of compatibility between components obtained from different sources. EFT Vacuum ISO KF are compatible with Klein Flange (KF) types. Use ISO KF for tube sizes DN16 to DN50. Our standard range of KF flanges and fittings are manufactured from 304 (1.4301) stainless steel.Maximum temperature for sustained use is 150°C. They are ideal for vacuum systems requiring regular assembly and disassembly. Each vacuum seal is made by compression of an O-ring on a centring ring between mating flanges. The seal is made in seconds by finger-closure of a wing nut on the all-metal hinged aluminium clamp.The ISO KF family of modular building block components includes all commonly used standard fittings, feedthroughs and accessories. Reducing flanges are available to connect different size components. Mating flanges are offered to interface with pipe and other flange systems including LF and CF.
CF Flange Series
The generation of ultra high vacuum (UHV) makes great demands on the material and connections. Therefore the CF standard was created in the UHV technology (ISO 3669; enhancement ISO/TS 3669-2). CF flanges are manufactured from circular blanks of stainless steel on CNC machines. Rotatable flanges are bipartite and consist of an inner part with the seal face and an outer part with the bolt holes. CF flanges have an annular groove on the vacuum side for the reception of the gasket and a knife-edge. EFT provides CF flanges and components of the dimensions DN10 to DN250 according to the pre-norm ISO/TS 3669-2. Please consider that individual standards of institutions are also available in the market. Please add the auxiliary dimensions (DN25, DN50, DN75, DN125) in case of requests and offers of CF flanges and components. In addition please add the size and the number of required bolts and the necessary copper gasket for dimensions from DN250.EFT follows the widely used convention of categorising different sizes of UHV flange by using a ‘DN’ specification.‘DN’ is the acronym of the French term ‘Diamètre nominal’ which translates as ‘Nominal bore’. The bore referred to is that of the tube that fits inside the designated flange. The bore is ‘nominal’because of the variation in tube wall thickness.
EFT 304 (1.4301) stainless steel tube is suitable for all high and ultrahigh vacuum applications. The material is priced per metre. EFT is pleased to showcase this range of edge-welded bellows connectors for UHV. These allow lateral movement, off-axis movement and vibration isolation. Offered with four standard fittings Weldable CF or ISO KF and LF flanges, our bellows are manufactured to the highest standards of cleanliness for UHV applications. All bellows are constructed from stainless steel grade AM350 with connectors in SS304 material. Special bellows assemblies and custom fabrications are also available on request.
EFT 's ISO KF and ISO LF tube fittings are convenient building-block components. They offer great flexibility in the design and construction of high vacuum systems. All fittings are fabricated from 304 stainless steel drawn and welded vacuum tubing. Flanges do not need to be rotatable since they are completely symmetric. If desired, rotatable bolt ring assemblies can be retrofitted to existing claw-clamp style flanges to add bolt holes to ISO LF fittings. Reducers are used for a change in size of flanges within a single method of sealing, such as elastomer sealing of ISO KF and LF flangesCustom configurations available on request
EFT hybrid adaptors provide a transition from one method of sealing to another. The hybrid feature of these adaptors is that the geometries at each end of any component are different. This is more than a change in size within a particular sealing method. They are available in most of the common interface transition pairs. There are two major categories of adaptors: one combines pairs of standard vacuum flanges and the other combines standard fittings with flanges. A frequent transition is from a metal seal flange to an O-ring sealed flange or fitting. Specifications are generally limited by the introduction of an O-ring seal. include at least one nonmetal seal and are therefore limited to high vacuum applications. Refer to individual component sections for specifications. Reducers are a change in size within a particular flange sealing method, such as metal-seal to metal-seal. Reducers within a specific sealing method can be found in the fittings portion of each flange section.Custom configurations available on request
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EFT Vacuum Components Service Introduction
EVERFIT TECHNOLOGY CO., LTD. is Taiwan Vacuum Components supplier and manufacturer with more than 39 years experence. Since 1976, in the food industry, pharmaceutical industry, biotechnology industry, semiconductor industries, EFT has been offering our customers high quality Vacuum Components production service. With both advanced technology and 39 years experience, EFT always make sure to meet each customer's demand.