your best partner for vacuum

Reducer Aluminum

INFICON ISO-KF fittings are manufactured according to ISO 2861/1, DIN 28403 and Pneurop 6606. Our quality fittings are the standard components for all vacuum and high vacuum applications. The high quality INFICON components are designed and tested for leak rates less than 1 x 10E-9 mbar l/s.


  • Competitively priced
  • World wide logistics
  • Design and measures follow strictly international respected standards
  • Surface finish, welds, material specifications and cleanliness meet or exceed high vacuum specifications
  • 2011/65/EU RoHS compliant

Part Number

Ordering Information Art.No.
Reducing intermediate piece, Al, DN25/16 211-231
Reducing intermediate piece, Al, DN40/16 211-232
Reducing intermediate piece, Al, DN40/25 211-233
Reducing intermediate piece, Al, DN50/40 211-234




Type DN 25/16 ISO-KF DN 40/16 ISO-KF DN 40/25 ISO-KF DN 50/40 ISO-KF
Dimension A 40 mm 40 mm 40 mm 40 mm
Dimension B 16 mm 16 mm 25 mm 40 mm
Material Aluminum 6082 Aluminum 6082 Aluminum 6082 Aluminum 6082