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CF 2.75″ 4-way cross 3D model
Crosses

CF 2.75″ 4-way cross

4 × CF 2.75″ (DN40CF) ConFlat flanges, 209.5 cm³ of internal volume and 224.7 cm² of wetted surface.

Build a system with this part

Its internal volume and surface area feed the pumpdown simulation, and its 3D characterization sets how it affects pumping speed.

Specifications

Type4-way cross
Flanges4 × CF 2.75″ (DN40CF) ConFlat (CF), knife-edge, copper gasket
Ports4
Internal gas volume209.5 cm³ (0.21 L)
Wetted surface area224.7 cm²
MaterialStainless 304
Overall size125 × 125 × 69 mm
Outgassing (unbaked, 1 h)6.0e-9 Torr·L/s/cm²
Simulation-readyYes, characterized from its 3D geometry

Volume and surface area are computed from the CAD model's enclosed gas space. Material outgassing values are typical published figures.

Parts that mate with CF 2.75″ flanges

CF 2.75″ 6-port chamber CF 2.75″ 6-port chamberCF 2.75″ · 172 cm³CF 2.75″ feedthrough CF 2.75″ feedthroughCF 2.75″ · 2 cm³CF 2.75″ blank flange CF 2.75″ blank flangeCF 2.75″CF 2.75″ to CF 1.33″ reducer CF 2.75″ to CF 1.33″ reducerCF 2.75″ / CF 1.33″ · 40 cm³CF 4.5″ to CF 2.75″ reducer CF 4.5″ to CF 2.75″ reducerCF 4.5″ / CF 2.75″ · 143 cm³CF 6.0″ to CF 2.75″ zero-length reducer CF 6.0″ to CF 2.75″ zero-length reducerCF 6.0″ / CF 2.75″ · 33 cm³CF 2.75″ zero-length reducer CF 2.75″ zero-length reducerCF 2.75″ · 15 cm³CF 2.75″ zero-length reducer CF 2.75″ zero-length reducerCF 2.75″ · 22 cm³