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Welcome to the Edition 4 of Damper Application and
News. This newsletter is for the users and
suppliers of dampers and equipment for flue and process
gases.
Click on the headlines below to take you to the full
text.
Headlines:
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THIS EDITION'S NEWS & ARTICLES |
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At the request of one of the companies
listed, links are provided to current company brochures
and information supplied in PDF format. Firms can email their information to be included
it their listing.
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Fox Equipment was
awarded the scrubber dampers and expansion joints for Dynegy's Baldwin Unit 1. This project
includes six louver dampers with blade spans ranging
from 12 ft. to 18 ft. All the dampers have integral
expansion joints built on to one of their flanges. The
project includes an additional 31 expansion joints. All
of the expansion joints utilize the CrossFilm
technology with 20 mils of Teflon. Expansion joints will
be assembled on carbon steel frames for ease of
installation.
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A-T
Controls' expanded line of Triac THD heavy-duty scotch
yoke actuators is engineered
for the most demanding
liquid and air handling
applications, powering
quarter-turn dampers and
valves with up to 1,600,000
in. lbs. (180,800 nm)
torque. Optimized
manufacturing and highly
modular design help reduce
cost, while increasing the
line's range of options and
torque ceiling. Capable of
operating ball, butterfly
and plug valves, dampers or
louvers - any device that
requires quarter-turn
movement for on-off or
throttling service - THD
actuators use a
symmetrical-design yoke that
delivers maximum torque at
both ends of the 90 degree cycle.
The proven design stands up
to hard service in
industries such as oil and
gas, power generation,
chemical processing,
water/wastewater, mining,
primary metals, and
pollution control.
The THD Series meets
comprehensive application
needs with six basic body
groups, each available in
spring-return or
double-acting versions and
operating air pressures from
40 to 100 PSIG, plus a
complete line of
accessories. Modular design
allows mixing power groups
and spring cartridges with
different center body sizes
to suit different air
pressures and requirements
for fail-clockwise or
fail-counterclockwise
operation.
A complete line of
accessories such as
jackscrew, hydraulic and
gear-driven overrides,
complements the THD series.
Mechanical, proximity,
inductive and transmitter
limit switch options are
available in all NEMA
ratings, along with
pneumatic, electro-pneumatic
and smart positioners. A-T
Controls offers complete
mounting hardware to
integrate THD actuators with
any quarter-turn valve,
damper or louver.
A-T Controls specializes in
modular, packaged solutions
and fast delivery from stock
on a comprehensive selection
of ball valves, actuators
and controls for process and
pollution control
industries.
For more information on
TRIAC THD actuators,
contact: Ron Ruehlmann, A-T
Controls, 11363 Deerfield
Rd., Cincinnati OH 45242.
Phone: 513-247-5465. Fax:
513-247-5462.
Email: Rruehlmann@a-tcontrols.com.
Website:
www.a-tcontrols.com.
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Laurentian Steel Fabricators
Laurentian Steel Fabricators is situated on a 22-acre
dockside facility within the Sydport Marine
Industrial Park. LSF is equipped to handle custom steel
fabrication on a large scale with extensive
lay-down and assembly space. LSF is strategically
connected to water (Sydney Harbour), rail
(CBNS / CN Railways) and road (100-series Highway)
systems, providing options to meet client
shipping demands.
LSF has 4,250 feet of wharf space with 20-36 feet of
water alongside. Offshore oil and gas supply
vessels, bulk carriers, product tankers, ferries, coast
guard vessels and ocean-going barges have
all loaded or been serviced at the facility. LSF has
built, assembled and loaded out skids for the
offshore oil and gas industry on-site.
The main fabrication shop is 13,500 square feet with an
additional 38,000 square feet available for
larger scale projects. The facility has everything you
would expect of an efficient custom steel
operation: ironworker, hydraulic shear, angle rolls,
plate rolls, bandsaw, and complete welding
equipment for steel and aluminum. The main shop offers
facilities equipped for finishing (sandblast
and painting) and is outfitted with two 15-ton overhead
cranes and an 8x19 foot plasma profile table
-- equipment which allows them manage very large
fabrication projects.
For more information
contact John Phalen (john@lsf-steel.com)
or visit their website at
www.lsf-steel.com
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NT Bearing Technology
Being Tested @ B&W
Testing is
being conducted on the new bearing product spotlighted
in a previous newsletter. This information is
repeated below. These new bearings are being
placed in an application where the existing bearings
failed.
Until now, damper companies and others, had to rely on
self-aligning graphite sleeve bearings for their high
temperature and/or low maintenance bearing needs.
There have been many cases where these bearings seized
or froze in the field, preventing operation of the
equipment. The HTB Corporation did extensive
case studies investigating the causes of damper shaft
seizures and then developed a product engineered to
address these issues, the NT bearing.
The heart of the NT bearing is a modified PTFE composite
system that is designed to offer all of the well
established, low friction, excellent corrosion
resistance, and high temperature performance of PTFE but
with greatly enhanced mechanical properties. PTFE and
its composites have been well established in critical
applications ranging from high pressure gaskets to harsh
chemical processing and handling.
The NT, self aligning sleeve bearing is a complete
replacement for non-precision, intermittent and
continuously operating systems utilizing graphite at
continuous temperatures up to 500 F˚ and speeds less
than 100 RPM's. This is idea for louver, butterfly and
guillotine dampers, as well as many other applications.
The patent pending NT bearing sleeve offers the
following features:
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Continuous operating temperature of 500 F˚ with
intermittent service up to 630 F˚.
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Enables the use of carbon steel shafting where
stainless was required to prevent binding with
graphite bushings.
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Has extreme resistance to chemical and environmental
attack and will not cause other materials to
corrode.
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Eliminates the risk of seizing due to contaminate
build up in the shaft to bearing interface.
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Has a very low coefficient of friction (0.06-0.360),
and significantly reduces the force required to
actuate a loaded shaft versus graphite.
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Has been engineered to resist cold flow at elevated
temperatures
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Electrically non-conductive.
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FDA approved material for direct food contact.
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No change in installation or housings from
traditional graphite sleeve bearings.
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Maintenance free design.
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Available in any standard bearing size and housing.
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Cost effective replacement for graphite.
Housing
configurations are pillow block, 2 bolt flange, and 4
bolt flange. These accommodate shaft sizes from 1" to
3" as well as metric 25mm to 78mm. Contact
HTB for other sizes.
Visit the NT Bearing Technology web site for additional
information including Chemical capabilities, Mechanical
Properties, Thermal Properties and Case Study at
http://www.getthecarbonout.com/.
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If anyone has any ideas, news releases, or wish to
contribute an article please send it to
Damper Don.
If you have any damper questions you what answered,
please send them in.
I would also like to recognize individuals who
contribute to this industry and perhaps are in the
background by giving them a spotlight in this
newsletter. If you have a vendor or fellow
employee you would like to see recognized, please send
us an email.
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