CPE end-suction single-stage

centrifugal pumps ASME B73.1

CPE process pumps – efficiency by design

Sulzer’s new CPE ANSI pumps are specifically designed to exceed the strictest energy regulations
for all industries as well as the requirements of ASME B73.1. With revolutionary hydraulics and high
efficiency, they offer the lowest life cycle costs.

Main applications
Sulzer CPE pumps meet the process requirements in a variety of
industrial applications and are suitable for use with:
• clean or slightly contaminated liquids
• viscous liquids of up to 3’000 cSt
• fibrous slurries of up to 6% consistency

Key customer benefits

Based on Sulzer’s decades of experience and in-depth knowledge of pumping

technology, the CPE pumps help you maximize value in your operation. Key benefits
include maximum energy efficiency, improved performance reliability and minimized total
cost of ownership. DOE
2020
Maximum efficiency
• The highest available efficiency on the ANSI pump market means clear savings in
energy consumption.
• Efficiency that exceeds the requirements of the U.S Department of Energy (DOE)
regulations taking effect in 2020. These pumps meet or exceed the Pump Energy Index PEI
(PEI) values set by the regulations. Approved

Improved reliability
• Optimized shaft seal life thanks to improved sealing chambers and Sulzer’s innovative,
patent-pending impeller balancing holes
• Reduced risk of unplanned shutdowns as a result of trouble-free shaft sealing with
Sulzer’s mechanical seals
TCO
savings 23%
• Heavy-duty rigid bearing units ensure long bearing life, leakage-free construction and
further protection against unexpected shutdowns.

Minimized total cost of ownership (TCO)

• Dramatic long-term energy savings thanks to high efficiency
• Low operational cost due to trouble-free Sulzer seals, rigid bearings and minimized
service
• Reduced inventory as a result of high interchangeability
• Reduced installation and maintenance costs due to easy installation and innovative
design

2
 CPE end-suction single-stage centrifugal pumps

Oil and gas Hydrocarbon Power Pulp, paper General Chemical Water and
processing generation and board industry process industry wastewater

Operating data

60 Hz 50 Hz
up to 7’000 USgpm Capacities up to 1’650 m3/h

up to 900 ft Heads up to 275 m

up to 400 psi Pressures up to 27.5 bar

up to 500°F Temperatures up to 260°C

up to 3’600 rpm Maximum speed of rotation up to 3’000 rpm

Performance range

H (ft)
850
Temperature Pressure
Corrosion pH
500 Liquid up to 500°F / up to 400 psi /
from 0 to 14
330 260°C 27.5 bar
200
Clean and
100 slightly
65 contaminated
liquids
32
Viscous
16 liquids

Fibrous
slurries
32 80 160 320 480 800 1400 4000 7000
Q (USgpm)

3
The optimal materials for your applications

Sulzer ANSI pumps are used in a wide range of chemical process applications as well as in
general industry including clean water. Selecting the best material according to specific process
requirements is important for maximizing pump life, especially for aggressive processes where
resistance to corrosion and abrasion is vital. Sulzer offers a large variety of material options for our
ANSI pumps, ensuring you get the optimal pump for your process.

Sulzer material offering

Nominal chemical composition %

Stainless steel design
C max Cr Ni Mo Cu N

ASTM A890 3A (CD6MN) 41 0.06 24.0-27.0 4.0-6.0 1.75-2.5 - 0.15-0.25

Duplex ASTM A890 1B (CD4MCuN) 4L 0.04 24.5-26.5 4.7-6.0 1.7-2.3 2.7-3.3 0.10-0.25

ASTM A890 5A (CE3MN) 4T 0.03 24.0-26.0 6.0-8.0 4.0-5.0 - 0.10-0.30

ASTM A743 (CN-7M) 43 0.07 19.0-22.0 27.5-30.5 2.0-3.0 3.0-4.0 -

Austenitic
AVESTA 654 SMO® * 4U 0.025 23.0-25.0 21.0-23.0 7.1-7.5 0.3-0.7 0.45-0.55

Martensitic ASTM A747 (CB7Cu-2 H900) 4E 0.07 14.0-15.5 4.5-5.5 - 2.5-3.2 -

Nickel alloy ASTM A494 (CW-6M) 4J 0.07 17.0-20.0 balance 17.0-20.0 - -

Nominal chemical composition %

Carbon, low-alloy cast steel, cast iron design
C Cr Ni Mo Cu Si

Ductile iron ASTM A395 60-40-18 5H - - - - - -

Material alternatives for other parts

Aramid fiber-elastomer Y6 Used in temperature range -40°C/-40°F...+160°C/+320°F and pH 2-12

Gasket Used in temperature range -190°C/-310°F...+240°C/

PTFE/Glass 84
material +464°F and pH 0-14

Flexitallic™ Sigma 511 - Used in temperature range up to +260°C/+500°F

EPDM 92 Used in temperature range -58…+300°F/ -50...+150°C

O-ring
material
PTFE 94 Used in temperature range -325…+500°F/ -200...+260°C

*Trademark by Outokumpu Oyj

4
 Optimized casting material selection
according to applications
Pitting and crevice corrosion that occur in metals are of particular interest in stainless steel.

Typical materials used in chemical process industry and general industry

180
80 654 SMO®* (4U)

70
T (kr), Critical pitting temperature oC

T (kr), Critical pitting temperature oF

140
60

50

40 A890 5A (CE3MN, 4T) 100

30 A890 1B (CD4MCuN, 4L)

A890 3A (CD6MN, 41)
20 A743 CG3M (AISI 317L, 4G) 60

10 A743 CF8M (AISI 316, 42)

A743 CF8 (AISI 304, 4C)
0 30
15 20 30 40 50 60
PRE (Pitting Resistance Equivalent)

Pitting in pumps refers to small, deep cavities that can form randomly
on wetted surfaces. Crevice corrosion, as the name suggests, occurs in
narrow crevices into which a solution can penetrate, but where it is not
flushed away during the normal course of operation as happens in more
open areas of the pump.

By calculating the sum of the most important alloys in a weighed form, it is

possible to identify the susceptibility of specific alloys to pitting and crevice
corrosion.

This calculated parameter is called the Pitting Resistance Equivalent

(PRE), commonly expressed as PRE = Cr % + 3.3 x Mo % + 16 x N %.
The values in the graph above have been calculated using this formula,
with the higher PRE number representing greater resistance to pitting and
crevice corrosion.

*Trademark by Outokumpu Oyj

5
Minimizing Total Cost of Ownership (TCO)

Total Cost of Ownership (TCO) refers to the true, full cost of your pump – from purchase and
installation to lifetime maintenance and operational expenditures. In engineering the new range of
CPE pumps, we at Sulzer have considered numerous factors that can potentially influence the TCO
of a process pump. The result is an innovative, superior design that makes it possible to achieve
remarkable annual savings.

Your initial purchase is only a small part of the entire capabilities make it easy to select the optimal pump
life cycle price for industrial pumps. Understanding for your specific processes. With the right pump for
the various elements that go into the TCO for your the application, you ensure maximum efficiency for
pump makes it easier to see how you can dramatically maximum savings.
reduce energy, operational, and maintenance costs.
Selecting the optimal pumping system for your
The diagram below demonstrates just how great a role operation also helps to minimize vibrations which
energy consumption plays in determining the long-term can cause mechanical stress. Along with the high
costs of pumping systems. The right pump technology, standardization in the design of the new CPE range,
properly sized for a specific application, offers an this enables you to dramatically bring down costs
important step for reducing energy consumption and related to maintenance and spare parts.
thereby the overall lifetime cost of the pump.
But that’s just the beginning. As the result of Sulzer’s
With the market’s most efficient hydraulics for extensive research and development, the new CPE
ANSI pumps, Sulzer’s new CPE pump creates new pumps include several features designed to help your
opportunities for significant, direct savings in energy business keep costs down. Learn more about the
consumption. The range’s wide selection, open ways in which the CPE range helps lower your TCO on
and closed impeller options, and available low-flow the following pages.

Typical distribution of Total Cost of Ownership (TCO)

Initial cost

Installation cost

Energy cost

Operation cost

Maintenance cost

Downtime cost

Environmental cost

Decommissioning cost

6
 Energy efficiency that exceeds legislative requirements

Energy efficiency is a hot topic in the industry. So important that many authorities worldwide are
preparing regulations for that. The European Union (EU) was the first and created the Energy-
Related Products Regulations and now the U.S. Department of Energy (DOE) has done the same.
They specify the Pump Energy Index (PEI) for clean water pumps, with the target of reducing energy
consumption. From 2020, only pumps in range 1-200 HP, which satisfy the PEI requirements, may
be sold.

U.S. Department European PEI, the Pump Energy Index for clean
of Energy MEI water pumps, was set up to be ≤1.0
PEI
from the beginning of 2020. The
0.75 0.8 standard will remove the worst
performing 25% of the pumps from
0.8
the market. The Sulzer CPE pump
0.85
CPE range is truly ahead of the game.

0.9
0.6 The CPE process pump range
0.95 not only meets the criteria, but
Minimum PEI limit breaks all records by even reaching
1.0
the PEI 0.77 values.

1 January 2020
Excellent performance achieved through advanced
hydraulic knowledge and unique design methods
Efficiency The entire CPE pump range
η
represents a major breakthrough in
energy efficiency. The cost savings
are substantial thanks to the many
innovations in the design process and
Sulzer’s unique hydraulic expertise:

• Groundbreaking engineering
methods improve pumping
CPE
performance.
• Effective simulation tools provide
Conventional pump quick analyses of various hydraulic
designs.
• Full-scale research center allows
Capacity testing of pumps in real operational
conditions.

DOE PEI TCO

2020 Approved savings 23%

7
Superior design features of Sulzer CPE pumps

1• High-efficiency, low NPSHr (Net Positive Suction Head

required) impeller 8• Non-contacting bearing protection
• Lowers energy consumption and downtime-related isolators
expenses for reduced total cost of ownership • Prevent lubricant leaks
• Extend bearing lifetime
2• Innovative patent-pending impeller balancing holes • Prevent outside contaminants from entering
• Optimum liquid circulation behind the impeller and in the seal the bearing housing
chamber • Minimize the risk of unexpected shutdowns
• Improved conditions for shaft seal, thus reducing the risk of and lower maintenance costs
unexpected shutdowns as well as minimizing operational
and maintenance costs 9 9• Impeller clearance adjustment
• Ensures easy-to-use, accurate operation
3• Optimal impeller mounting 8 • Enables maximized efficiency during entire
• Reliable operation pump lifetime
• Provides easy and quick assembly and dismantling • Offers substantial savings in total cost of
• To secure the impeller in back flow situations, an optional 7 ownership
impeller bolt is available
10 Various baseplate options
4• Various sealing options including • Provide optimal selection for all industries and
Sulzer mechanical seals 5 applications
• Ensure reliable and trouble-free operation 2 4 • Ensure easy and fast installation
• Provides easy and quick assembly and dismantling • Offer savings in installation costs
• Reduce total cost of ownership by minimizing maintenance 6
and downtime-related costs 1 3 11• Highly standardized pump design
• Minimizes spare parts inventory and lowers
5• Various seal chamber options maintenance costs
• Allow optimal seal chamber selection for your specific
process needs
• Reduce total cost of ownership by minimizing maintenance
and downtime

6• Heavy-duty bearing unit with oversized bearing design

• Minimizes risk of unexpected shutdowns and reduces
maintenance costs
• Available in either oil or grease lubrication
• Exceeds ASME B73.1 requirements for bearing life
• Provides interchangeability with previous ANSI model (CPT)
• Includes magnetic drain plug

7• Heavy-duty, robust overhung shaft

• Minimizes deflection at shaft sealing to less than 0.002 in /
0.5 mm
• Extends the shaft seal lifetime, reduces the risk of
unexpected shutdowns and lowers maintenance costs
• Duplex stainless steel material is standard

8 9
Impeller

The efficiency, stability and reliability of the pump are based on the design. Sulzer CPE pumps
feature an innovative impeller designed in tandem with the volute case and sealing chamber. The
result is the market’s most efficient hydraulics with improved shaft sealing for higher reliability.
Semi-open and closed impellers offer versatility for various liquids, maximizing standardization to
minimize your need for spare parts.

Semi-open impeller for clean, fibrous and viscous liquids

• Extremely high efficiency

• Low Net Positive Suction Head required (NPSHr)
• Capability for low-flow applications
• Full back shroud
• Sturdy and strong design
• Optimized balancing holes

Closed impeller for clean and viscous liquids

• Extremely high efficiency

• Low Net Positive Suction Head required (NPSHr)
• Optimized for low-flow applications
• Sturdy and strong design

Unique, patent-pending balancing holes

• Dry running of the single mechanical seal is eliminated for the

entire pump operating range.
• Optimized flow and pressure in the shaft sealing area
• Increased reliability, reduced risk of downtime and lower
maintenance costs

Reliable impeller mounting

• Impeller threaded to the shaft according to ASME B73.1

standard
• Optional impeller locking bolt is available.
• High mechanical strength
• Reliable and easy installation
• Minimized downtime and reduced maintenance costs

10
 Low-flow applications

Now you do not need a special pump or impeller to run low flows! The innovative design of Sulzer’s
CPE pump hydraulics is optimized to run low flows with a standard impeller.

% BEP 5 55 100 120

The CPE pump range provides optimal
Low flow operating area Normal operating area
low-flow performance without any
mechanical risks. You can run the
BEP pump with a wide range starting from
5% of BEP flow (Best Efficiency Point).
Head

If you are running low flows

(between 5 and 55% of BEP flow),
it is recommended to install a flow
straightener in the suction pipe to
ensure stable, trouble-free operation
Flow
with the highest possible efficiency.
3% head drop
NPSHr
Sulzer can provide flow straighteners
with complete delivery to ensure fast
and easy installation and reliable, long-
Power term performance.
Power

Sulzer CPE pump with flow Straight and smooth inlet

straightener in the suction pipe for flow with the help of flow
low flows. straightener.

Rotating inlet flow

causing pumping
problems (without flow
straightener).

11
Shaft sealing

Shaft sealing has a great influence on pump reliability. Therefore it is essential to select the
best technical solution for your specific application. For the CPE pump range, Sulzer offers a
comprehensive selection of seals and seal chamber options to make sure your pump is fully
optimized to your process for the highest possible uptime.

Available shaft sealing types

Mechanical seal Sulzer dynamic seal Gland packing

• Single and double seals available • Dynamical seal needs no water • Suitable for light-duty
• Flushing options: no flushing, • Suitable for applications with applications, including those with
internal flushing, external flushing positive pump inlet head and a clean or slightly contaminated
• Suitable for all applications temperature below boiling point liquids
compatible with the CPE range under atmospheric pressure
• Reliable and strong Sulzer • Suitable for clean liquids, viscous
mechanical seals available and fibrous slurries and liquids
containing large solids
Seal chambers

A complete variety of seals and various seal chamber options is available for the CPE pump range
to ensure optimal shaft sealing, maximizing operational reliability and minimizing downtime costs.

Seal chamber options

Standard bore Tapered bore Large bore

• For clean liquids, liquids • For clean and demanding liquids • For clean liquids, liquids
containing particles and slurries • For single or double mechanical containing particles and slurries
• For single or double mechanical seals • For single or double mechanical
seals and gland packing seals
• The oversized chamber helps
reduce running temperatures
while improving lubrication and
circulation

Universal bore
• For clean liquids
• For single or double mechanical
seals
13
Compact heavy-duty bearing units

CPE bearing units are reliable, leakage-free and heavy-duty, resulting in minimized
unexpected shutdowns and reduced downtime and maintenance costs.

• Heavy-duty overhung shaft minimizes

deflection at stuffing box to less
than 0.002 in / 0.05 mm, thereby
extending the lifecycle of the shaft
seal.
• Oil bath lubrication equipped with
an oil slinger, oil mist lubrication,
and grease lubrication are available
for versatile applications with
temperatures of the pumped liquid of
Oil bath Grease
up to 500°F/260°C lubrication lubrication
• The same bearing unit can be used
for oil and grease lubrication without
changing or adding any internal parts.
• Bigger oil volume for even better Reliable bearing isolators
lubrication with lower operating Non-contacting bearing isolators at both ends of the bearing
temperatures housing with strong and reliable construction prevent lubricant
• Features a magnetic drain plug leaks and keep contaminants out.
• Large oil sight glasses enable easy
oil level monitoring on both sides of The isolators are easy
bearing unit. to install and always
• The strong, over-sized bearing design stay in the correct
exceeds the ASME B73.1 standard position.
bearing life.
• A sturdy support foot provides a
solid base and prevents coupling
alignment changes.
• Interchangeable with original Sulzer
CPT pump bearing unit

Impeller clearance adjustment

Externally adjustable impeller to front casing clearance
allows restoring the pump to its original efficiency. This
helps further minimize long-term energy consumption and
maintenance costs.

• Ensures quick, easy and accurate impeller adjustment

without the use of a feeler gauge or removal of the pump
from the piping.
• Ensures concentricity and bearing alignment throughout
the impeller’s adjustment range.
• Restores pump efficiency for direct savings in energy and
spare parts costs.

14
Key design features –
installation, operation and maintenance
1• Various baseplate options 6• Flexible coupling with spacer
• Easy to install and grout into the concrete • Provides quick and easy maintenance
foundation
• Lower vibration and reduced wear and tear 7• Back pull-out design
• Facilitates quick access for servicing
2• Riser blocks for motor
• Allow the installation of bigger motor sizes without 8• Jackscrews
baseplate modification • Enable simple disassembly of the main parts of the
• Ease installation and minimize maintenance costs unit while minimizing maintenance costs

3• Optional alignment blocks 9• Foundation bolts according to preferred

• Ensure fast and easy alignment to reduce installation method
maintenance costs • Can be welded, grouted or installed with chemical
anchors
4• Guards for the rotating parts
• Designed according to stringent safety regulations
• Ensure safe and reliable operation

5• Visual access on both sides of the guards

• Provides safe and easy stroboscope inspection of
the coupling during operation

7 4
6

8
5
3

15
Baseplate options

Various baseplate options are

available to meet any needs.
Sulzer baseplates are robust
and rigid, designed for easy and
quick installation of a pump-motor
combination.

Riser blocks enable the installation

of larger drive motor frames on the
same baseplate without further
modifications. Aligning the motor
is easy with the help of alignment
blocks.

Standard baseplate
Sulzer standard formed steel baseplates meet ANSI specifications for
pump/motor mounting. A single grout hole and epoxy paint are standard.
Options include a stainless steel drip pan and 100% stainless steel
construction.

Drip-lip baseplate
The drip-lip baseplate with welded end caps includes a sloped drainage
channel to a welded drain connection making this an excellent upgrade
to the standard baseplate. Options include motor adjustment bolts,
additional grout vent holes and 100% stainless steel construction.

PIP baseplate
This baseplate is designed to current PIP requirements and comes
standard with a grout hole, raised mounting pads, motor alignment
bolts, additional welded supports, a sloped full-drain pan, lifting lugs and
continuous welded steel construction. Options include leveling stilt and
spring mounting and 100% stainless steel construction.

Non-metallic baseplate
Nothing compares to the Sulzer polymer composite baseplate design.
The polymer baseplate features a standard guaranteed surface flatness of
0.015” or 0.005” end-to-end, SS inserts, leveling holes and polymer riser
blocks. The polymer baseplate is the best value in the industry.

API baseplate
This baseplate is designed according to API requirements for pump/motor
mounting. Possible leaks are collected on the baseplate. Standard riser
blocks enable the installation of larger drive motor frames as required.
Motor adjustment bolts are included to facilitate fast, simple adjustment of
the motor when aligning the coupling.

16
High standardization and interchangeability

The Sulzer CPE pump range is standardized, using common modules and components for
maximum interchangeability, easy installation and maintenance. Fewer parts mean lower inventory
costs and greater process reliability.

High standardization lowers

your spare parts inventory

Sealing and Sealing and

Size Size
bearing unit bearing unit

11-1 21-1.5
Common components and modules in the CPE range
11-1.5 21-2
with all options include:
• 40 wet-end hydraulics 11-2 1 21-3
• 2 impeller types 12-1 22-1
• 4 shaft seal bore types
12-1.5 22-1.5
• 3 shaft seal sizes
• 3 bearing unit sizes 22-2
• sealing water equipment 31-6 22-3
2
• couplings and coupling guards
31-8 22-4
• baseplates
32-4 24-1.5
Sulzer CPE pumps are interchangeable with older 32-6 24-2
CPT pumps, and the CPE hydraulics can also
32-8
3 24-3
be installed on an existing CPT bearing unit. By
upgrading an existing CPT pump with high-efficiency 33-4 24-4
CPE hydraulics, you get direct savings as a result 33-6
of improved energy efficiency. In addition, the CPE
33-8
bearing unit is fully interchangeable with existing CPT
bearing units.
17
Service kits for CPE pumps

When your pump needs service, you should not have to worry about spending valuable time
searching for the right parts – or even worse, finding out that some small but vital parts are missing.
With Sulzer CPE service kits, you get everything you need in one package.

Tailor-made service solution Easy to order and use Key customer benefits
Sulzer offers four tailored service One unique item code cover- • All the necessary parts in one
kits for CPE pumps to help and ing all the items in the kit makes package
simplify service tasks. Kits are purchasing quick and convenient. • Easy to order
available for impeller, bearing unit, Sturdy packaging protects the • Easy to identify and use
dynamic seal and gland packing individual items from damage and • Reduced inventories
service. All the required O-rings can be recycled after use. • Original spare parts ensure
and other small parts are in one compatibility, reliability and reduced
package for specific service. lifecycle costs.

Bearing unit service kit

320.01 Antifriction bearing
412.02 O-rings
931.01 Lock washer

Impeller service kit 412.03 O-ring

400.01 Gasket

412.01 O-ring

412.08 O-ring *

554.11 Washer *

914.03 Screw *

* optional

923.01 Bearing nut

320.02 Antifriction bearings

18
Dynamic seal service kit

412.04 O-ring

412.06 O-ring

435.01 Static seal

412.05 O-ring

Gland packing service kit

461.01 Packing

458.01 Lantern ring

524.01 Shaft sleeve

19
 Lenntech
info@lenntech.com
info@lenntech.com Tel. +31-152-610-900
Tel. +31-152-610-900
www.lenntech.com
www.lenntech.com Fax. +31-152-616-289
Fax. +31-152-616-289

E10431 en 11.2018, Copyright © Sulzer Ltd 2018

This brochure is a general presentation. It does not provide any warranty or guarantee of any kind. Please, contact us for a description of the warranties and guarantees offered with
our products. Directions for use and safety will be given separately. All information herein is subject to change without notice.