Q.1 How does a diffusion pump work? Ans. A diffusion pump works on the principle of gas diffusion to create vacuum. In a diffusion pump, diffusion pump oil is heated to its boiling temperature. Vapor of this oil is compressed in a vertically tapering hollow cone as it moves up. Simultaneously this oil vapor…
Details
Q.11 How to prevent back streaming of diffusion pump oil? Ans. To prevent back streaming of Diffusion Pump oil it must be ensured that- System is “Roughed out” before Diffusion Pump is put in line. Rotary vacuum pump is maintaining a vacuum of at least 10-2 Torr. If process is causing release of a large…
Details
Q.21 What is the alternative of CVC4 diffusion pump oil. Ans. Supervac Industries, New Delhi manufactures silicone diffusion pump oil SV-SIGMA. This oil is a perfect alternative of CVC4. Infact, SV-SIGMA has a much larger satisfied customer base and has been in use much before CVC4 started getting promoted. Q.22 Can somebody supply me…
Details