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Vacuum adaptors, flanges, hoses & fittings

EM-Tec standard KF vacuum flange hardware components and parts are directly compatible with all KF, NW or QF vacuum flange hardware connections. 

Interchangeable designations for these standard rough and medium vacuum flange connections are:

KF, DN-KF, ISO-KF, NW, ISO-NW, QF and DN.

Standard sizes offered are:

DN10KF (adapts to DN16KF), DN16KF, DN25KF, DN40KF and DN50KF

Most components are offered in stainless steel, however, for adaptors vacuum grade aluminium alloys are sometimes preferred. Standard KF vacuum flanges are extensively used to connect vacuum components on a range of vacuum systems, including coaters, electron microscopes, vacuum ovens, vacuum pumps, vacuum gauges etc.

Dimensions of DN-KF flanges

DN-KF-Flanges

Dimensions (mm)

DN10KF

DN16KF

DN25KF

DN40KF

DN50KF

Flange OD ØA 30 30 40 55 75
Centering seal  ØB 12.2 17.2 26.2 41.2 52.4
Vacuum line ID ØC 10 16 24 40.5 51
Vacuum line OD ØD 14 20 28 44.5 57

 

We offer:

  • EM-Tec KF flange adaptors with 1/8” female NPT thread. Made from vacuum grade aluminium for connecting components such as vacuum gauges, small valves and NPT connectors with 1/8” male NPT thread
  • EM-Tec KF flange adaptors with 1/8” female NPT thread. Made from vacuum grade AISI 304 stainless steel
  • EM-Tec KF flange adaptors with 1/4” female NPT thread and with 1/4” male NPT thread
  • EM-Tec KF vacuum flange centering seals. Consisting of a stainless-steel centering ring and a Viton O-ring. They are placed between the KF flanges and seal when the flanges are pushed together by wing nut clamps
  • EM-Tec KF vacuum flange centering seals with centering ring and Viton O-ring. Available with stainless steel 304 centering ring and aluminium centering ring
  • EM-Tec replacement O-rings for worn or damaged centering seals. O-rings are made from NBR (Nitrile) and are slightly softer than the Viton seals to provide a secure seal in vacuum lines. Sold in packages of 10
  • EM-Tec quick-release hinged clamps which are placed around the KF vacuum flanges. By turning the wing nut, the hinged clamp closes and seals the O-ring on the KF vacuum flanges. Made from aluminium with stainless steel pins, bolt and wing nut

Vacuum hoses

EM-Tec Flextube clear, wire reinforced thick wall PVC vacuum hose

EM-Tec Flextube is a clear, wire-reinforced thick wall PVC vacuum for making flexible and custom vacuum hoses. Made from corrosion resistant clear thick wall PVC with embedded zinc plated spring steel wire. This flexible yet strong hose allows for relatively sharp bends and will not collapse under vacuum. Outside and inside of the PVC vacuum hoses are smooth. The smallest bending radius is approximately 3.5 times the outside diameter. To prevent vacuum leaks, use hose clamps to tighten the PVC vacuum hose on the vacuum hose adaptors. Current choice includes: 16mm and 25mm ID PVC vacuum hoses. Available in lengths up to 10 metres.

EM-Tec DN-KF Flextube PVC vacuum hoses

 The ready to use EM-Tec DN-KF Flextube vacuum hoses are made from EM-Tec Flextube clear, wire reinforced PVC hose with KF hose adaptors on each end. They are available with KF16 and KF25 flanges with lengths from 0.5 to 5 metres.

Ordering information:

For quick navigation:

Vacuum adaptors

Blanking flanges

Vacuum clamps and centering o-rings

Vacuum reducers

Vacuum elbows

Vacuum vent valves

Vacuum hoses

Vacuum hose adaptors

Vacuum hose clamps

 

Vacuum adaptors

 

Blanking flanges

Vacuum clamps and centering o-rings

Vacuum reducers

Vacuum elbows

Vacuum vent valves

Vacuum hoses

Vacuum hose adaptors

Vacuum hose clamps