2
Zenith
®
Thoroughly read and understand this entire manual
before installation and operation of pump.
Benefits
Specifications
In 1926, Zenith Pumps was approached
by the synthetic fiber industry to design
a pump that would provide precise,
pulseless and repeatable flow while
ensuring ultimate product quality. The
options then were the same as those in
the chemical process industry today—
diaphragm, lobe, coarse gear, piston,
plunger and screw pumps. Each has
problems with pulsation, flow inaccura-
cies, multiple seal areas and slip, which
require constant calibration, high main-
tenance and extended downtimes.
Zenith Pumps met the challenge
and designed a rotary external gear
pump of unique precision and simplicity.
Manufacturing techniques were devel-
oped to hold tolerances to ±.00005",
minimizing internal clearances and
assuring accurate and precise metering.
The pump’s simplistic design of only
three moving parts – two metering gears
and a drive shaft – provided long life
and reduced maintenance.
For years, engineers have relied on
Zenith to provide precision fluid han-
dling solutions for their most difficult
pumping applications. Zenith gear
pumps can be found wherever
precise,
pulseless,
and
repeatable metering
of
fluids is required.
High Accuracy —
Stable, repeatable
flows are assured even under varying
conditions of temperature, viscosity and
pressure.
Precision Construction —
Ground and
lapped components allow for operating
clearances to .00015" and provide high
volumetric efficiency.
Minimum Pulsation —
Unique design
offers virtually pulseless flow without
valves or flexible elements to hinder
performance.
Active Flowmeter Concept —
Unparalleled mechanical precision,
combined with the closed loop set point
accuracy, ensures an exact volume
per revolution without expensive flow
meters.
Low Cost of Ownership —
With only
three moving parts and 400 series
stainless steel construction, the pump
provides excellent corrosion resistance
for most chemical processes, and is
through-hardened to 54 Rc or better for
maximum life.
Experience —
Zenith has over 74
years of application experience with
engineers available 24 hours a day to
support your precision fluid metering
needs.
Capacities (cc/rev):
0.05, 0.3, 0.6, 1.2,
2.4, 4.5, 9.0, 15, 30, 45, 90
Recommended Speed:
.05 to 30 cc/rev, up to 500 RPM
45 & 90 cc/rev, up to 300 RPM
Flow Range:
up to 27,000 cc/Minute, (7 GPM)
Inlet Pressure:
300 psi (20 Bar) Max.
Outlet Pressure:
1000 psi (70 Bar) Max.
Differential Pressure:
20 to 1000 psi. (viscosity dependent)
Temperature:
0° F (-18° C) Minimum
400° F (205° C) Maximum (with magnetic
coupling seal)
645° F (340° C) Maximum (dependant on
shaft seal materials)
Seals:
Single Mechanical, Double Lip,
Packed or Magnetic
Rotation:
Clockwise (CW) facing drive shaft
Port Connections:
Metric thread or SAE 61 Standard
Optional Port Adapters:
M12 X 1/4" NPT
. . . . . . . . .
0.05 – 2.4 cc/rev
1/2" SAE X 1/2" NPT
. . . . . .
4.5 – 9.0 cc/rev
3/4" SAE X 3/4" NPT
. . . . . . .
15 – 30 cc/rev
1-1/4" SAE X 1-1/4" NPT
. . .
45 – 90 cc/rev
Optional Band heaters:
150 Watt, 115 VAC . . . . 0.05 – 2.4 cc/rev
325 Watt, 115 VAC . . . . 4.5 – 9.0 cc/rev
650 Watt, 230 VAC . . . . . 15 – 30 cc/rev
1500 Watt, 230 VAC . . . 45 – 90 cc/rev
