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STYLE 600 - FLUE DUCT EXPANSION JOINTS AND
FAN CONNECTORS

DESCRIPTION

 UNAFLEX® "MIGHTY-SPAN" Style 600 Rubber Flue Duct Expansion Joints are designed to handle hot air or gases in industrial duct work, as well as those generated by power plant and pollution control equipment. They are custom constructed of rubber and fabric to absorb thermal movements and vibration in duct work and to aid in the elimination of noises caused by scrubber equipment and mechanical dust collectors.

Mighty-Span is capable of handling any combination of large movements which might occur in a ducting System due to thermal expansion.

Mighty-Span creates almost no load on damper and fan interfacing flanges thus providing much needed protection in these critical areas.

A wide range of elastomers and fabric substrates is available to provide maximum resistance to corrosion and high temperature capabilities. Let UNAFLEX®  assist you in selecting the "MIGHTY-SPAN" product for your application.

CONFIGURATIONS

     Square, rectangular or round shapes can be produced in almost  any size. Standard construction is "U" shape with a 9 inch flange (other face-to-face dimensions available). Arch shapes also available. Body thickness of this one-piece molded joint is a nominal 5/16 inch. Extra liners are usually not required, but may be ordered if necessary.

Sleeve Type

U-Type

Single Arch
Multi Arch

Sleeve Type

U-Type

Single Arch

Multi Arch
ORDERING INFORMATION AVAILABLE IN WIDE CHOICE OF METALS

PLEASE SPECIFY THE FOLLOWING REQUIREMENTS:

  1. ROUND, RECTANGULAR, OVAL, OFFSET
  2. DIAMETER(S)
  3. INSTALLED FACE TO FACE
  4. TYPE OF MEDIUM
  5. OPERATING & DESIGN TEMPERATURE
  6. OPERATING & DESIGN PRESSURE
  7. AXIAL COMPRESSION
  8. AXIAL ELONGATION
  9. LATERAL DEFLECTION
  10. FLANGE DETAIL (BOLT CIRCLE, # HOLES, DIA.)
  11. STANDARD WALL THICKNESS STYLE 600=1/4" STANDARD WALL THICKNESS STYLE FAN CONNECTORS 3/16 - 5/16"
  12. TYPE AND THICKNESS OF RETAINING RINGS.
UNAFLEX® style 600 joints may be constructed of *Nomex® (to 400ºF), fiberglass or polyester cloth impregnated with one of the following

NEOPRENE - Resistant to heat, adverse weather conditions, ozone and flue gases. Impervious to fats, oils, greases and other petroleum products. Recommended for use up to 250ºF.

CHLOROBUTYL - An elastomer with all of the above advantages of neoprene with the exception of its inability to withstand ail. Designed for 300ºF environments.

*VITON® - In addition to providing all of the properties of neoprene Viton® is highly resistant to mineral acids and useable in 400ºF applications.

*E.I. duPont Trademark
 

TYPICAL INSTALLATION ARRANGEMENT

RECOMMENDED SERVICE

Environmental conditions
Elastomer Usable
To----EF		 Recommended For Use In
Oils, Grease Ozone &
Flue Gases
Neoprene 250 good good
Chlorobutyl 300 ---- good
*Viton® 400 good good
Silicone 500 good -----
 
* E.I. duPont Trademark
Note: Tube stocks in conformance with FDA requirements available.
 

Pressure....................to 3.0 psig. max.
Vacuum.....................6.12" Hg, 83" Ho
Compression*.............2"
Extension*.................1/2"
Transverse..................1 1/2"

*U-Type compression and elongation formulas.

  1. Lateral Elongation= 2 lbs. per foot of perimeter per 1/16" of movement. For example: 2' x 2' I.D.= 8' perimeter deflection= 1" = 16/16.         2 lbs. x 8" x 16"=256 lbs.
     

  2. Axial Compression = 2.2 lbs. per foot of perimeter per 1/16" of movement. For example: 2' x 2' I.D. = 8' perimeter deflection = 1" = 16/16.
    2.2 lbs. x 8" x 16" = 282 lbs.