Pump assembly for obtaining a high vacuum

Pump assembly incorporating vane pump and impeller

Pump means for pumping a mixture of coarse-grained material and

Pump means for swimming pools and similar facilities

Pump plate of a rotary feed pump

Pump system with vacuum source

Pump system with vacuum source

Pump system with vacuum source

Pump, especially for pumping fuel from a storage tank to an inte

Pump, particularly for highly viscous materials

Radial piston pump

Reciprocating bladder pump, and methods of constructing and util

Reciprocating completely sealed fluid-tight vacuum pump

Reciprocating hermetic compressor

Refrigerant compressor and motor

Roller vane stage for a fuel pump

Rotary fluid energy converter

Rotary fluid machine having rotor segments on the outer...

Rotary gas expansion motor

Rotary pump and improved discharge port arrangement