4-Way KF (QF) Reducer Crosses

We fabricate these KF (QF) crosses for HV systems from tubing and KF flanges. The KF (QF) flange is used for through- or foreline vacuum plumbing and for simple HV chamber ports.

KF Crosses Feature:

  • Available in 304L stainless steel or aluminum 6061-T6 (4-way standard crosses only)
  • Reducer crosses adapt two different flange sizes
  • Common lengths and tube diameters listed
Flange Size Flange Type Dim A Dim B Weight
KF25/KF16 Stainless Steel 50 43.2 0.34
KF40/KF16 Stainless Steel 65 49.5 0.45
KF40/KF25 Stainless Steel 65 56.4 0.45
KF50/KF16 Stainless Steel 69.9 55.9 0.68
KF50/KF25 Stainless Steel 69.9 62.7 0.68
KF50/KF40 Stainless Steel 69.9 71.4 0.9


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