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Rectangular PTFE Acoustic
Flexible Connections

Rectangular PTFE acoustic flexible connections - Model 517 and 518
Industrial Grade, All Welded Construction

Applications
  • Fan inlets and outlets
  • Pressure blower inlets and outlets
  • Scrubber inlets and outlets
  • Dryer outlets
  • Stack inlets
  • Process ductwork
Model 517 rectangular PTFE acoustic flexible connections
  • Tough, 30 mil, 32 oz/sq.yd, PTFE flex membrane resistant to virtually all chemical fumes and capable of operating up to 575° F
  • Good for airstream flows to 6,000 fpm and pressures from -30" wg to +120" wg
  • All welded, matched and drilled flanges
  • Backing bars fastened in place with zinc plated hardware
  • Acoustically rated design with absorptive acoustic pillow and acoustic outer barrier
Model 518 rectangular PTFE acoustic flexible connections
  • Identical construction to Model 517 flexible connections, with an aerodynamically designed, protective metal flow liner
  • Good for airstream flows over 6,000 fpm and pressures from -120" wg to +120" wg (with a flow liner)
  • Double deflectors are also available for extra flow protection and noise reduction
Rectangular PTFE acoustic flexible connection
Rectangular PTFE acoustic flexible connection features
Design options
  • Flexible connections incorporating a special PTFE flex membrane with an insulated laminate for temperatures to 750° F
  • Customized thermal/pillowed flexible connections for temperatures over 750° F

For other flexible connection designs, please contact us and we will be happy to assist you.

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Product details

Operating temperatures

Up to 575° F (standard)

Up to 750° F (laminate design)

Over 750° F (pillowed design)

Flows

Up to 6,000 fpm (Model 517)

Over 6,000 fpm (Model 518)

Pressures

-30" wg to +120" wg (Model 517)

-120" wg to +120" wg (Model 518)

Sizes

From 12" X 12" inside to 120" X 120"

inside (standard) - Larger sizes available

Flange-to-flange length

8" for flanges less than 4"

10" for flanges 4" and larger

Lateral and axial movement

+/- 0.5"

Unit weight

Up to 1000 lbs (standard sizes)

Materials

Carbon steel flanges, backing bars and flow liner (if supplied), zinc plated backing bar hardware and PTFE flex membrane, absorptive acoustic pillow and acoustic outer barrier


Stainless steel flanges, backing bars, flow liners and hardware available


Galvanized construction also available

Paint finishes:

Alkyd, enamel, high heat, inorganic zinc, epoxy and polyurethane