Major types of positive-displacement pumps include: 1  Roots. 2  Lysholm twin-screw. 3  Sliding vane. 4  Scroll-type supercharger, also known as the G-Lader.
I believe that the first Reich refers to the establishment of the Holy Roman Empire in the 9th century was Charles the Great. The Second Reich was the unification of Germany under the Prussian Kaiser Wilhelm II in 1870. Of course, we all know what the Third Reich was. The First Reich was the Holy Roman Empire. There is little agreement as to when it was founded. Most German historians date the foundation from the coronation of Otto I in 962. That 'empire' had a continuous existence till 1806. The Second Reich was created by Bismarck in 1871 and lasted till 1918.
The Fourth Reich, the Reich, or simply Nazis for short is a Fascist Neo-Nazi faction in the Metro series.It is a major player in the post-apocalyptic Metro System and had evolved overtime from the Central Metro Command from possible extremist political leaders.ue to the Nazis' xenophobic beliefs, they have a shoot first-ask questions later type of policy and are hostile to all non-Nazis outside their territory but due to their fanatical military policies, recruits are low in Reich controled stations and makes it impossible for outsiders to join the Nazi cause.