Lewis Pumps0 pages

LEWIS PUMPSTM
Vertical Chemical Pumps
Weir Minerals Lewis Pumps is known internationally
in the sulphur, sulphuric acid and phosphoric acid
industries with equipment installed in more than 120
countries worldwide. Founded in 1891 as Chas. S.
Lewis & Co., Inc., today Weir Minerals Lewis Pumps is
the recognized world leader for pumps and valves in
these difficult pumping applications.

Lewis PumpsTM sulphuric acid pumps

Product highlights

Formerly known as Chas. S. Lewis & Co., Inc., Weir
Minerals Lewis Pumps, manufactured its first sulphuric
acid pump in 1914, beginning a specialization which
has continued to the present time. Today, the company
is the world’s acknowledged leader in the design
and manufacture of pumping equipment for sulphur
chemistry applications.
With material selections featuring the proprietary
LEWMET® alloys to provide maximum corrosion
resistance, the hydraulic and mechanical engineering
concepts embodied in Lewis Pumps™ sulphuric
acis pumpsassure the plant operator of outstanding
performance and reliability in high temperature
sulphuric acid and oleum.
Mechanical features
•t Heavy-duty construction specifically developed for
superior service in strong sulphuric acid and oleum.
•t Hardened LEWMET® nickel-chrome alloy used for
critical wearing parts subjected to high velocities,
corrosion and abrasion.

•t Specially formulated alloy shafts of premium yield strength,
precision straightened and fitted with PTFE cover for hightemperature applications.
•t One-piece shafts provide highest available standard of
straightness and balance for smooth operation.
•t Casing and other heavy wetted parts made of an exclusive
alloyed iron incorporating generous corrosion allowances for
long life.
•t Dual-volute casing and balanced wear ring designs reduce
hydraulic loadings, minimizing shaft deflection while
prolonging the life of wearing parts and ball bearings.

Weir Minerals Lewis Pumps customer service
commitment has been a major contributor to our
worldwide success. This philosophy is reflected in our
ability, in an emergency, to ship standard replacement
wear parts within 72 hours to most international
airports. Senior Weir Minerals Lewis Pumps sales
engineers are available to assist your plant personnel
address a wide variety of operations maintenance and
installation questions.

GENERAL DESIGN CONCEPTS
Because of the dangers inherent in pumping hot concentrated
sulphuric acid, Weir Minerals Lewis Pumps supplies vertical
pumps for this service; the fluid pumped never touches the shaft
stuffing box, thereby avoiding the safety and environmental
problems associated with horizontal pumps.

Sulphur & sulphuric acid pumps coverage chart
Lewis Pumps™ vertical
chemical pumps are safe for
your operators and safe for the
environment.

•t Sulphuric Acid Pumps – Flow rates to 13,000 gpm /
3000 M3/H
•t Molten Sulphur Pumps – heads to 500 ft /150 mlc
and pump lengths to 275” / 7000 mm
•t Phosphoric Acid Pumps – vertical centrifugal and
axial flow pumps offered in specialized metallurgy
•t LEWMET® Alloys – suitable for use in strong
sulphuric acid to 460° F / 240°C & phosphoric acid
•t Sulphuric Acid Valves – gate, globe, and butterfly
to 30” / 750 mm diameter

WARMAN® Centrifugal Slurry Pumps
GEHO® PD Slurry Pumps
VULCO® Wear Resistant Linings
CAVEX® Hydrocyclones
FLOWAY® PUMPS Vertical Turbine Pumps
ISOGATE® Slurry Valves
MULTIFLO® Mine Dewatering Pumps
HAZLETON® Specialty Slurry Pumps
LEWIS PUMPSTM Vertical Chemical Pumps
BEGEMANN PUMPSTM Centrifugal Process Pumps
WEIR MINERALS SERVICES

Excellent
Minerals
Solutions

Weir Minerals Lewis Pumps

(formerly Chas. S. Lewis & Co., Inc.)
8625 Grant Road
St. Louis MO 63123
USA

Tel: 314 843 4437
Fax: 314 843 7964
www.weirminerals.com

Copyright © 2010, Weir Slurry Group, Inc. All rights reserved
WARMAN is a registered trademark of Weir Minerals Australia Ltd and Weir Group African IP Ltd; CAVEX, HAZLETON, MULTIFLO are registered trademarks of Weir Minerals Australia Ltd; LEWIS PUMPS, LEWIS, CHAS. S.LEWIS are trademarks and LEWMET is registered trademark of Envirotech Pump Systems
Inc; GEHO and BEGEMANN PUMPS are registered trademarks of Weir Minerals Netherlands bv; FLOWAY is a registered trademark of Weir Floway Inc.; VULCO is a registered trademark of Vulco SA; ISOGATE is a registered trademark of Weir do Brasil Ltda.tttt
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LEWIS PUMPSTM
Vertical Chemical Pumps

Comprehensive Product Line
Vertical pumps, acid valves, and alloys

Excellent
Minerals
Solutions