A Twin City Fan Company
HEAVY DUTY CUSTOM FANS
> Petrochemical (API 673 & 560)
> Cement/Lime
> Pulp & Paper
> Iron & Steel
> Sintering & Pelletizing
> Power Generation
> Glass
> Refinery
> Incineration
> Mine & Tunnel Ventilation
> Automotive
> Aluminum
> Coal/Coke
Clarage is the heavy duty division of Twin City Fan
Companies Ltd. that specializes in designing and
manufacturing custom heavy duty fans. Established
in 1874, our long-standing reputation and market
expertise has made us the industry-leading manufacturer for countless industries and thousands of
process applications.
We set ourselves apart from the competition because
of several key items that provide unmatched value to
our customers, including:
>The fastest turnaround times in the industry.
Clarage can quote faster, design faster, build faster
and install faster than the competition.
>Experienced project management. Clarage’s Project
Manager is your single point contact who leads an
experienced team consisting of a Project Engineer,
Project Coordinator and Project Executive.
>On time high quality documentation submittal and
management. Clarage can take on the most stringent
requirements that you or your customer can throw
at us and completely execute the project from start
to finish – from the documentation all the way down
to the testing of the finished product.
>Proprietary in-house configuration and engineering
software allows us to support our customers at
every step before they get the order through to
shipment and installation.
>Vertical integration in manufacturing that leads to
the highest quality and on-time delivery.
>Being the leader in testing services. Clarage has
invested in high-end shop testing that is unique in
the industry. Every contract’s performance can be
proven prior to installation. This can be invaluable
incite when it comes to troubleshooting field
performance challenges.
To design and test our products, Clarage utilizes the
latest in 3D modeling technology and other sophisticated software for finite element stress analysis,
model analysis, steady-state and transient torsional
analysis. Fatigue analysis and fracture mechanics
calculations are also performed to assure that only
the highest quality products leave our facility.
Accurate, 3D models and to-scale drawings of fan
assemblies can be provided in a number of electronic formats. Clarage has extensive experience in
designing new fans, as well as redesigning existing
fans for life extension, increased performance and
higher operating efficiencies.
Clarage utilizes our state-of-the-art sound and
performance laboratory in Minneapolis for product
development. Shop performance and mechanical
run tests are conducted in Pulaski, TN, utilizing
customer drives or our laboratory drives up to
4,000 horsepower. Non-destructive testing includes
in-house ASNT Level III examination utilizing Magnetic
Particle, Dye Penetrant and Ultrasonic methods.
Radiagraphy is also available as needed. Clarage
produces weldments in accordance with AWS
D1.1 and D14.6 codes and employs AWS Certified
Welding Inspectors to assure compliance. Precise
product development, conservative design and
aggressive testing combine to produce fans of the
highest caliber.
> Finite Element Analysis
> Torsional Analysis
> Transient Torsional Analysis
> Bearing Analysis
> Modal Analysis
> Computational Fluid Dynamics
> System Model Evaluation
> Performance & Mechanical Run Tests
- Up to 4,000 HP (2,983 kW)
- 120V to 4,160V
> Seismic Testing
> Non-Destructive Testing (NDT)
> Rotor Balancing
- up to 160 inch diameters (4,065 mm)
> Aerodynamic Performance Testing
> Thrust Testing
> Sound Surveys
> High Temperature/Survivability Testing
> Overspeed Testing
> Installation Advisors
> Inspection
> Performance Testing
> In-Field Balance & Laser
Alignment
> Operational Training
> Vibration Analysis
> Troubleshooting
Installation Support
When dealing with fans of this magnitude, having
the peace of mind that your fan is installed and
operating properly is crucial. That is why Clarage
offers a wide range of on-site services to ensure
the success of your project. As part of our standard
startup services, Clarage field personnel will conduct
a variety of inspection checks to ensure the fan is
ready for startup – all the way from the foundation
bolts to the lubrication of the fan.
One call to Clarage provides access to all facets of
field installation. If you don’t have the manpower or
expertise to install the fan yourself, you can always
turn to the Clarage team for a complete solution to
your needs. Let us offer you a complete package:
the fan, the removal of old equipment and the
complete installation of your new fan system.
> Installation & Commissioning
> Retrofits - All Brands
> Demolition
> Repair & Rebuild
> Duct Work Modification
> Damper Installation
> Inlet Cones
> Motor/Turbine Alignment
> Coupling Alignment
> Preventive Maintenance
> Technical Services
> Material Upgrades
www.clarage.com
Airfoil
The Airfoil blade design delivers the highest static
efficiencies of all centrifugal fans. The Clarage AF,
AFM, and RHM fan models are the perfect choice
in applications requiring heavy-duty fans operating
at low energy cost.
Since the Clarage airfoil fan can be used in applications where particulate is present, our design
is used extensively in many different industries. A
solid nose bar and blade liners can be built into
each blade and provide maximum abrasion resistance
along the leading edge and on high wear areas of the
blade. Blades are also reinforced to meet the exact
duty requirement.
The skilled craftsmen in Clarage’s in-house manufacturing facility take pride in building the best airfoil
fan in the industry.
Backward Curved Airfoil wheel with wear plates on blades next to
the back plate. Clarage performed shop performance, mechanical
run tests and sound survey on this fan for a major oil refinery.
>Best airfoil fans in the industry
>Highest static efficiencies of
all centrifugal fans
>Reinforced blades
>Solid nose bar and blade liners are available to provide maximum abrasion resistance
>Designed specifically for applications requiring high static pressure
>Full blade and housing liners available for severe duty applications
>Hard surface weld beads are added to break up abrasive dust patterns
Backward Curved
Single Surface Airfoil
The Backward Curved Single Surface Airfoil achieves
static efficiencies slightly less than an Airfoil. Clarage
engineers can assist you in selecting between the
RHS, BCS, and CHS styles to find the perfect fit to
achieve your performance criteria.
Applications requiring higher static pressure impose
extreme stress on the wheel components due to high
tip speeds. The Clarage Backward Curved wheel is
designed specifically to meet this challenge. When
required, these fans can also be equipped with full
or partial blade liners for severe duty applications.
Clarage’s unique “S” shaped blade profile delivers
higher efficiencies with the ruggedness of the radial
tip fan. Typical applications include coal-fired boilers,
electric arc furnaces and cement kilns.
Backward Curved Wheel
Modified Backward Curved “S” Wheel
Backward Inclined
The Backward Inclined BIM fan is a straight bladed
design that is ideally suited for clean and abrasive
airstreams. The high wear and abrasive nature of
Induced Draft and Kiln Dryer fans can wear the
blades of a fan very quickly. The Backward Inclined
design sheds particulate and can be designed with
high brinel wear liners to prevent erosion of the
impeller.
>Designed to shed particulates, such as dust, in the airstream
>Suited for both clean and
dirty airstreams
>Great for all temperatures
Clarage’s custom engineered Backward Inclined fan
model BIM can achieve the highest levels of efficiency,
and are perfect for high static pressure applications.
Whether you are exhausting high temperature, dirty, or
corrosive gases, we can design the fan at the peak
of efficiency to meet your needs.
Modified Radial
The Clarage HMF Modified Radial wheel design
is a slightly backward inclined shrouded radial. It
combines the best of the Radial design with the
efficiency of the BI design. A slight backward
incline to the blades combined with the radial
blade design makes it the best solution for dirty
or particulate-laden airstreams.
Designed for coal conveying, the HMF is available
with blade liners for wear protection and a variety
of specific speeds to meet all design requirements.
Whether you are conveying pulverized coal, sand or
steel sinter, the HMF can stand up to the toughest
environments.
www.clarage.com
>High efficiency design ideally suited for material handling
>Designed to withstand the most demanding environments
>First choice for severe duty applications
>Self-cleaning flat radial blade design
>Sustains very high tip speeds to meet high static pressure needs
Radial Blade
The Clarage Radial Blade XLR fan is the first
choice for severe duty applications, especially
those involving hot, abrasive or sticky particulate.
The flat radial blade design is self-cleaning, which
makes it very cost effective by reducing downtime
in critical and continuous service applications.
Clarage’s Radial Blade fan is designed to sustain
very high tip speeds to meet your high static
pressure needs.
The radial blade wheel shown reveals
the narrow blade tip width for developing
high static pressures, and straight radial
design for excellent resistance to material
build up.
Radial Tip
>Rugged design makes it suitable for severe duty service areas
>Full blade and housing liners are available for the most
abrasive applications
Clarage Radial Tip fans are used extensively in
many industries. The ruggedness of our RT and
RTC radial tip wheel makes it especially suitable in
severe duty service areas, such as cement plants,
flue gas recirculation and boiler Induced Draft fans.
It can be armored with full blade and housing liners
for the most abrasive applications.
Variable Pitch Axial
Axial fans are ideally suited for high volumes of
air at lower static pressures. Clarage’s Variable
Pitch axial design uses multiple blades attached
to a center hub to adjust air performance while
in operation. The highly engineered center hub
linkages are designed to rotate the blades open
and closed to increase or decrease the airflow of
the system without ever having to shut the fan off.
Variable Pitch Axial Fans are perfect for Induced
Draft and Forced Draft Fans in the power and
mining industry. As airflow requirements change in
the system, let the fan do the work. The seamless
transition from low to high flow allows the system
to adjust while the fan is running.
State-of-the-art engineering and tight machining
tolerances on the hub components leads to years
of maintenance-free operation on all Clarage Variable
Pitch Axial Fans. Whether you need a 24" fan to
feed an oxidizer or an 8m fan to run a wind tunnel,
Clarage has a solution for you.
Adjustable-at-Rest Axial
The Adjustable-at-Rest Axial Fan utilizes the same
design as the variable pitch. The complexity of the
adjustable center hub is removed and the blades
are locked into place. Simply shut the fan down to
make adjustments to the blade angle for increasing
or decreasing the airflow. Hooking the system up to
a damper or VFD can also allow for easy adjustments
to the airflow.
The lower cost and simpler design of the Adjustableat-Rest impeller is ideal when cost or maintenance
is a major concern. Clarage’s CFD, FEA and modeling capabilities allow us to custom engineer the
exact fan configuration that will best accommodate
your needs.
>Automated adjustments can be made to the blade angles while the fan is running
>Available in six blade designs to fit the fan to the exact duty
>Engineered with high quality components for years of dependable, low maintenance operation
>Manual adjustments can be made to the blade angles while the fan is at rest
>Highly engineered, lower cost alternative
Tubular Bases
> Machinery base design
> High lateral rigidity
> Column support
> Shimming/grouting only required under pads
> Vertical jacking screws and spring isolators available
> Available with bottom pan for integral concrete inertia mass
Clarage recognized that in order to achieve high
design resonance levels, the stiffness of the base
was key. That is why Clarage engineers designed
a reinforced tubular base with a rectangular crosssection and thick tube-wall. The resulting base
provides trouble-free fan operation – even with
motors in excess of 800 HP – and gives the fan
engineer or user more options for the foundation design. So whether you require 1,000,000 or 3,000,000
lbs. of horizontal stiffness, we have a solution to
meet your exact design requirements.
Two-Stage
Fan System
> High pressures up to 200" WC
> Balanced bearing thrust loading
> Creates cost savings in some applications by replacing the need for a turbo compressor
Clarage is a leading supplier of two-stage fans
for process applications. A two-stage fan can
accommodate applications involving corrosive
gases and particulate loaded gas streams where
compressors are not suitable. Two-stage fans
also operate at reduced speeds to produce the
same pressures as single stage fans, resulting in
reduced wear rates. One driver and one foundation
result in a smaller footprint and reduced installation
and maintenance costs. Clarage’s two-stage fans
are ideal for high pressure applications, such as
compressor superchargers, air pollution control
systems, flue gas recirculation, fluidized beds,
boilers, and high pressure chemical processing.
www.clarage.com
Heavy Duty Dampers
Variable inlet vanes are highly efficient at maintaining
volume control, offer more control than box dampers,
and lower part load power consumption. These radial
inlets have control dampers that can be used
with open inlet fans or fans with inlet boxes. For
high temperature fan applications, such as ID fan
service, the mechanism can be isolated from the
gas stream.
External linkage radial vane dampers are also highly
efficient at maintaining volume control. Having the
bearings and linkage outside of the casing promotes
longer life and allows for operation in particulateladen applications. Routine maintenance can also
be performed on the bearings and linkage while the
fan is in operation.
Clarage designs and manufactures both opposed
blade (MLOB) and parallel blade (MLPB) multi-louver
dampers. MLOB dampers are commonly used on
fan outlets. MLPB dampers, when used on fan inlet
boxes, provide increased fan efficiency at reduced
loads. Rugged construction is a featured quality of
these types of dampers.
Opposed Blade Damper
Nested Variable Inlet Vane
Butterfly Damper
Bolt-On Radial Blade Damper
> Multi-Louver Opposed Blade
> Multi-Louver Parallel Blade
> Bolt-On Radial Blade
> Butterfly
> Shut-Off
> Variable Inlet Vanes
(Nested & Split)
>Low Leakage Designs
>Spark Resistant Construction
>Abrasion Resistant Construction
>Cast Iron Access Doors
>Steam Turbines
>Bearings
>Vibration Detection Systems
>Speed Switches
>Damper Actuators
>Zero Leakage Shaft Seals
>Couplings
>Silencers
>Oil Lubrication Systems
>Clutches
>AC/DC Motors
>Insulation (Thermal & Acoustic)
Custom Engineered Centrifugal & Axial Fans
Forced Draft | Induced Draft | Process Fans | Pressure Blowers | Industrial Exhausters | Material Handling
2-Stage | Adjustable-At-Rest & On-The-Fly Variable Pitch Axial Fans
Dust Collectors
Standard Sizes Up Through 2 Million CFM | 6", 9" and 11.5" Tube Availability
Standard or Totally Accessible (TA) Design
Dampers
Opposed Blade | Parallel Blade | Nested Variable Inlet Vane | Bolt-On Radial Blade | Butterfly | Shut-Off
Testing Services
Performance & Mechanical Run Testing | Seismic Testing | Non-Destructive Testing | Rotor Balancing
Aerodynamic Performance Testing | Thrust Testing | Sound Surveys | High Temperature Testing
Overspeed Testing
Field Services
Installation Advisors | Inspection | Performance Testing | In-Field Balance & Laser Alignment
Operational Training | Vibration Analysis | Troubleshooting
Turnkey Services
Installation & Commissioning | Retrofits - All Brands | Demolition | Repair & Rebuild | Duct Work Modification
Damper Installation | Inlet Cones | Motor/Turbine Alignment | Coupling Alignment
Preventive Maintenance | Technical Services | Material Upgrades
A Twin City Fan Company
202 Commerce Way | Pulaski, TN 38478 | (931) 424-2500
www.clarage.com