CF 2.125″ to CF 1.33″ zero-length reducer

1 × CF 2.125″ (DN25CF), 1 × CF 1.33″ (DN16CF) ConFlat flanges, 2.8 cm³ of internal volume and 11.3 cm² of wetted surface.

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

Specifications

Type	To CF 1.33″ zero-length reducer
Flanges	1 × CF 2.125″ (DN25CF), 1 × CF 1.33″ (DN16CF) ConFlat (CF), knife-edge, copper gasket
Ports	2
Internal gas volume	2.8 cm³ (0.003 L)
Wetted surface area	11.3 cm²
Material	Stainless 304
Overall size	53 × 53 × 12 mm
Outgassing (unbaked, 1 h)	6.0e-9 Torr·L/s/cm²
Simulation-ready	Yes, 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.