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CF 2.75″ × CF 1.33″ reducing 4-way cross (C-0275-133) 3D model
Crosses

CF 2.75″ × CF 1.33″ reducing 4-way cross

C-0275-133: 2 × CF 2.75″ (DN40CF), 2 × CF 1.33″ (DN16CF) ConFlat flanges, 132.8 cm³ of internal volume and 165.9 cm² of wetted surface.

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Its internal volume and surface area feed the pumpdown simulation, and its measured transmission probabilities set its molecular conductance in the pumping-speed simulation.

Specifications

Type× CF 1.33″ reducing 4-way cross
Catalog IDC-0275-133
Flanges2 × CF 2.75″ (DN40CF), 2 × CF 1.33″ (DN16CF) ConFlat (CF), knife-edge, copper gasket
Ports4
Internal gas volume132.8 cm³ (0.133 L)
Wetted surface area165.9 cm²
MaterialStainless 304
Overall size69 × 125 × 96 mm
Outgassing (unbaked, 1 h)6.0e-9 Torr·L/s/cm²
Molecular transmission dataYes: Monte Carlo port-to-port transmission probabilities

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″ / CF 1.33″ flanges

CF 2.75″ 4-way cross CF 2.75″ 4-way crossC-0275 · CF 2.75″ · 210 cm³CF 2.75″ 5-way cross CF 2.75″ 5-way crossC5-0275 · CF 2.75″ · 253 cm³CF 2.75″ 6-way cross CF 2.75″ 6-way crossC6-0275 · CF 2.75″ · 297 cm³CF 2.75″ vacuum gauge CF 2.75″ vacuum gaugeCCPG-H2-3 · CF 2.75″CF 2.75″ to CF 1.33″ reducer CF 2.75″ to CF 1.33″ reducerCRN275X133 · CF 2.75″ / CF 1.33″ · 40 cm³CF 4.5″ to CF 2.75″ reducer CF 4.5″ to CF 2.75″ reducerCRN450X275 · CF 4.5″ / CF 2.75″ · 143 cm³CF 2.75″ 6-port chamber CF 2.75″ 6-port chamberCU6-0275M · CF 2.75″ · 172 cm³CF 1.33″ blank flange CF 1.33″ blank flangeF0133X000N · CF 1.33″