Patent ID: 7563075

Claim:
A liquid ring pump having a first housing part which encloses two or more working spaces radially, in which in each case there is arranged an eccentrically rotatably mounted impeller, having second and third housing parts, which seal off the first housing part and the pump on both sides and have ducts or chambers for the supply and discharge of the gas conveyed, and having inner and outer control disks that bound the working spaces in the axial direction, characterized in that the first housing part is formed in one piece, and has an intermediate wall between the two working spaces which accommodates the inner control disks, at least one connecting duct leading from the second to the third housing part is provided, and in that the first housing part has an axis at right angles to the axial direction in such a way that, by rotating the first housing part through 180° about this axis, the contact surfaces and fixing elements sealing with the second and third housing part are transferred identically into one another.