Vacuum Assembler Open the assembler
Vacuum Assembler › Parts › CF 8.0″ × CF 2.75″ reducing 4-way cross
CF 8.0″ × CF 2.75″ reducing 4-way cross 3D model
Crosses

CF 8.0″ × CF 2.75″ reducing 4-way cross

2 × CF 8.0″, 2 × CF 2.75″ (DN40CF) ConFlat flanges, 4,929 cm³ of internal volume and 1,490.1 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

Type× CF 2.75″ reducing 4-way cross
Flanges2 × CF 8.0″, 2 × CF 2.75″ (DN40CF) ConFlat (CF), knife-edge, copper gasket
Ports4
Internal gas volume4,929 cm³ (4.929 L)
Wetted surface area1,490.1 cm²
MaterialStainless 304
Overall size202 × 279 × 239 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 8.0″ / CF 2.75″ flanges

CF 8.0″ 6-port box chamber CF 8.0″ 6-port box chamberCF 8.0″ · 6,105 cm³CF 2.75″ 6-port chamber CF 2.75″ 6-port chamberCF 2.75″ · 172 cm³CF 8.0″ 6-port box chamber CF 8.0″ 6-port box chamberCF 8.0″ · 6,143 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 cm³