Zenith® B-Series Metering Pumps
Download Installation, Care,
and Maintenance Manual
In 1926, Zenith Pumps 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 inaccuracies, multiple seal areas and slippage, which required
constant calibration, high maintenance and extended downtimes.
Zenith Pumps met the challenge and designed a
rotary external gear pump of unique precision and simplicity.
Manufacturing techniques were developed to hold tolerances to .00005", and
an internal pressure relief mechanism assured reliable precision metering.
The pump's simple design of only three moving parts - two metering gears and a
drive shaft - provided 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.
- 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.
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