patterson type "g" axial and mixed flow pumps have demonstrated over and over again their ability to move large volumes of liquid at low to medium heads with an efficiency and economy unobtainable with any other type of pump.
these axial and mixed flow pumps consist of a bowl assembly, which is cast and provides much more reliable service; an outer column and discharge elbow; shaft and shaft cover tube; floor plate; and motor mounting stand.
the axial flow propeller or mixed flow impeller is positioned in its individual impeller housing just above the suction bell and close to the pump inlet. Water enters the pump through the suction bell, is discharged by the impeller into a guide vane section or diffuser, and then is pumped through the outer column to the discharge connection of the pump elbow. The pumps may be built in one or more stages, depending on the total head requirements, in bowl sizes from 12" to 84". Capacities run from 2,000 to 500,000 gpm, with heads up to 100 feet per stage. Custom units are available if your requirements exceed the above conditions.
patterson axial and mixed flow pumps can be furnished with an open line shaft when pumping a relatively clear product. Patterson can also provide "pull out" designs to make regularly scheduled inspection and maintenance easier. The design permits removal of the entire bowl assembly, including all rotating parts, diffuser, impeller housing and suction bell, through the outer shell without disturbing either discharge or floor plate connections.
axial and mixed flow pumps generally operate in a submerged state with suction entrances flooded. Horizontal units are installed with a positive suction head.