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FlexRight
FAQs:
Q.
What is a “Durable Elbow Support”?
A.
A “Durable Elbow Support” is the
generic name for a product called
“FlexRight.” The phrase “Durable Elbow
Support” is taken from the FlexRight
written specification and used
generically in the ASHRAE Advanced
Energy Design Guides for Schools,
Retail Buildings, Warehouses, and
Office Buildings. Below is an
excerpt from the guides:
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Flexible
ductwork should be of the insulated
type and should be
Limited to 5 ft or less.
Installed without any kinks.
Installed with a durable elbow
support when used as an elbow.
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Q. What is a FlexRight?
A.
FlexRight is a radius forming brace
designed to eliminate kinks and
airflow restrictions common to most
flexible duct installations. FlexRight
installs over the outer jacket of
flexible duct to form a smooth
unrestricted 90-degree elbow.
FlexRight is used with diffusers, air
devices, duct collars, and HVAC equipment.
Q.
What are the size ranges for
FlexRight?
A.
FlexRight is manufactured adjustable
and universal to fit flexible duct
sizes 4” through 16” (102mm - 406mm). FlexRight works
with all brands of commercial and
residential flexible duct.
Q.
Is FlexRight a GREEN product?
A.
Yes, FlexRight is made from 100% recycled
materials and saves energy by
improving airflow. Improved airflow
saves energy by allowing unrestricted
air delivery. Less "work" is required
by air handling equipment to deliver
conditioned air to occupied spaces.
Q. Can FlexRight be retrofitted on
existing flexible ducts to save
energy?
A.
Yes, FlexRight straps over the outer
jacket of flexible duct. Airflow can
be improved at any flexible duct that
is accessible. A retrofit installation
requires approximately two minutes per
diffuser (see
illustration).
Q.
Are there installation guidelines and
standards pertaining to the minimum
acceptable radius bends for flexible
duct?
A.
Yes, besides the ASHRAE Energy Design
Guides mentioned above, SMACNA (Sheet
Metal Air Conditioning Contractors
National Association) and ADC (Air
Diffusion Council) address acceptable
flexible duct bends. Installing
FlexRight meets or exceeds their
recommendations. Below are excerpts
from their published guides:
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SMACNA - FLEXIBLE AIR DUCT
INSTALLATION STANDARDS
“Bends shall be made with not less
than 1 duct diameter centerline
radius.”
Air
Diffusion Council – Flexible Duct
Performance & Installation Standards
“Radius at center line shall not be
less than one duct diameter.”
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Q. Is FlexRight UL Classified?
A. Yes, FlexRight is UL
Classified. (UL 2043) Additional
information available upon request.
Q. I am a mechanical engineer and
would like to specify FlexRight on my
future projects. Are CAD detail
drawings available?
A. Yes,
click here
to view. DWG and DXF files
available upon request.
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