Large volumes of water,
moved continuously and fast. That’s what you get with Patterson
Axial and Mixed Flow Pumps. This design delivers high capacity at
low to medium heads with outstanding efficiency. These heavy-duty
performers are widely used for flood
control, irrigation
and drainage projects, large scale primary water supplies,
industrial process
work, power plant condensing and other circulating systems. Municipalities
the world over rely on these pumps to protect lives and property
in the event of massive runoff or storm surges.
These pumps generally operate in a submerged state with suction entrances flooded. Horizontal units are installed with a positive suction head. Capacities range from 2,000 to 500,000 gpm with heads to 60 ft per stage, and bowl sizes from 12 in. to 84 in.
These pumps consist of a durable cast bowl assembly, 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.
A special configuration has an open line shaft for pumping relatively
clear products. Patterson can also provide "pull out" designs
to simplify maintenance. The design permits removal of the entire
bowl assembly without disturbing either discharge or floor plate
connections.
Non-threaded-type line shaft couplings have keys and thrust rings.
Line shaft bearings are conservatively spaced. The bowl shaft is
ASTM A276 Type 416 SS, and the pump bowl diffuser is a single piece
casting.
Each of these pumps is specially designed and built to individual
customer requirements. These pumps are exhaustively tested with the
aid of our in-house test laboratory.
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