Dear all,

Before all, thank you very much for excelent content and the helpful resources.

Currently I face with an issu regarding vacuum pumps and I tried to download the book "Liquid Ring Vacuum Pumps, Compressors and Systems: Conventional and Hermetic Design
by Helmut Bannwarth".

So, the link above and did appear a message as "not available".

Could someone help me please?

Best Regards