Style 1095
Maxi-Span™

Non-Metallic Expansion
Joints for Ducting Systems

FEATURES & BENEFITS

  • Solid Fluoroplastic PTFE Construction
  • Cycle Life in the Millions
  • No Fiberglass Component to Fatigue
  • 500° F Continuous Service
  • ±3 PSI Pressure Rating
  • Ultimate Chemical Resistance
  • Zero Porosity in Wet and Dry Service
  • Heat Formed and Sealed to any Size and Arrangement
  • Absorbs All Directional Ducting Movements
  • Reduces System Noise
  • Isolates Shock and Vibration
  • Compensates for Minor Misalignment and Offset
  • Integrally Flanged Design
  • Low Stiffness and Deflection Forces
  • Easily Field Spliced or Repaired by Heat Sealing
  • Simple to Install, Lightweight and High Strength
  • Provides Easy Access to Ducting and Equipment

APPLICATIONS

General Rubber's Style 1095 Maxi-Span can be used in the most demanding industrial Ducting Systems, particularly where flutter or heavy vibration would normally fatigue fiberglass reinforced or metallic units.

The Maxi-Span Series of non-metallic expansion joints are ideally suited for new construction, as well as replacement and retrofit applications. Our engineers are available to review your requirements or to conduct an on-site inspection of your entire ducting system. We will be delighted to recommend one of our designs or develop one specific to your needs.

VARIATIONS

General Rubber's Style 1095 Maxi-Span can be supplied with Flow Liners/Baffles for highly abrasive service and Insulation Pillows for higher system temperatures. Custom-engineered frames are also available in all material types.

Technical Advantages

Cross Sectional View: AA
Installed Lengths
F/F (in)		 MFD Length
F/F + (in)		 Movement Capabilities (in)
COMP EXT. LATERAL
3 1/2-6
1/2
2
1/2
1
6 1/2-9
3/4
3
3/4
2
9 1/2-12
1
4
1
3
12 1/2-16
1
5
1
4
Rated Pressure/Vacuum ±3
Rated Temperature 500°F

Rectangular Flange Detail

Round Flange Detail
Retaining Rings/Backing Bars are A-36 carbon steel with zinc rich paint finish as a standard, 1/4" TH for ±2 PSI and 3/8" TH for ±3 PSI. Also available in hot dip galvanized finish or stainless steel and other material. Suggested bolt spacing at 4" max.
Product Weight – Retaining Rings/Backing Bars 1/4" TH x 2" are approximately 2.5 lbs. per linear foot, 3/8" TH x 2" are approximately 3.75 lbs. per linear foot. The Expansion Joint material is approximately 0.4 lbs. per square foot. Add 7" to installed F/F dimension when calculating total square feet.

Notes:
1) Extension movement capabilities can be increased with additional pre-compression during installation.
2) Standard PTFE thickness 30 mils, also available in 12-60 mils with varying technical advantages.
3) Flange gaskets suitable for the system temperature and fluid media should be used to ensure a full seal.
4) Anchors should be used to resist the pressure thrust force and to isolate the thermal movements between expansion joints.
5) For vacuum or large pre-compressed applications, a set-back may be required to keep the expansion joint from protruding into the gas stream or making contact with the flow liner/baffle.