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 escapes…
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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…
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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…
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