Specifications

2
Zenith
®
Thoroughly read and understand this entire manual
before installation and operation of pump.
Pump Type: Rotary external spur gear, single stream.
Rotation: See pump drawing.
Operating Speed: 3-180 rpm depending upon application conditions and fluid
viscosity.
Temperature: To 300° F (150° C). Heat jacket required for above ambient
temperatures.
Benefits
Specifications
In 1926, Zenith
®
was approached by the
synthetic fiber industry to design a
pump to provide a precise, pulseless,
repeatable flow and assure better quality
control. The options then were the same
as those in the chemical process industry
today — diaphragm, lobe, coarse gear,
piston, plunger and screw pumps. Each
had problems with pulsation, flow inac-
curacies, multiple seal areas and slippage,
which required constant calibration, high
maintenance and extended downtimes.
Zenith
®
met the challenge and
designed a rotary external gear pump
of unique precision and simplicity. Man-
ufacturing techniques were developed to
hold tolerances to ±.00005", minimizing
internal clearance to assure accurate and
precise metering. The pump’s simplistic
design of only three moving parts–two
metering gears and a drive shaft–pro-
vided long life and easy maintenance.
For years since, chemical engineers
have relied on Zenith
®
to provide precision
fluid handling solutions for their most
difficult pumping applications. Zenith
®
gear pumps can be found wherever
precise, pulseless, repeatable metering
of fluids is required.
High Accuracy
Stable, repeatable flows are assured
even under varying conditions of
temperature, viscosity and pressure.
Minimum Pulsation
Unique design offers virtually pulseless
flow without valves or flexible elements
to hinder performance.
Precision Construction
Ground and lapped components and
built-in dowels allow for close control
of operating clearances.
High Volumetric Efficiency
Maximum efficiency is achieved
with optimum operating clearances.
Corrosion Resistance
400 series stainless steel provides good
bearing qualities and the necessary
corrosion resistance for most standard
chemical processes.
Maximum Life
Only three moving parts; components
are through hardened to HRc 54 or better.