A screw pump is a more complicated type of rotary pump that uses two or three screws with opposing thread e . g ., one screw turns clockwise and the other counterclockwise.
22.
Several dimensional and functional standards exist, such as API Standard 682-Shaft Sealing Systems for Centrifugal and Rotary Pumps, which sets precise configurations and sizes for mechanical seal used in Oil & Gas applications.
23.
Ricardo s adaptation of the existing all-iron gasoline V8 featured the company s famous Comet cylinder heads and indirect injection using mechanical injectors and a rotary pump; with identical engine mounts and bellhousing bolt patterns to the gasoline version, the diesel was a straight swap and easily integrated on the production line.