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Duct Work

U.S. Bellows provides custom designed expansion joints in duct work and fabricated duct work assemblies. The assemblies may include fabricated elbows, tees, and straight sections of duct work, in carbon steel or stainless steel, and in diameters of 42″ or larger. The duct sections can include fabric or metallic expansion joints and can be rectangular or round. U.S. Bellows can also provide specialized pipe supports and spring hangers for large diameter duct work. Additionally, we offer complete pipe stress analysis of your duct systems using CAESAR II software.

Data Tables

Features

  • Generally made from stainless steel or carbon steel
  • May include fabric or metallic expansion joints
  • Can be round or rectangular

Technical Information

FAQs

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Duct Expansion Joint – Rectangular & Round – Low Temperature

Pressure3 p.s.i (Max), Positive Pressure only
Temperature400 °  F (Max) -- 40 °  F (Min)
MovementsFlange - to - Flange Dimension
10"12"14"16"18"
Axial Compression½"1"1½"2½"3"
Axial Extension½"½"½"½"½"
Lateral Offset¼"½"¾"1"1"

Duct Expansion Joint – Rectangular & Round – High Temperature

Pressure3 p.s.i (Max) 27" H 2 O (Vacuum Max)
Temperature600 °  F (Max), -- 40 °  F (Min) specify
MovementsFlange - to - Flange Dimension
10"12"14"16"18"
Axial Compression½"¾"1¼"1½"2"
Axial Extension½"½"½"½"½"
Lateral Offset¼"3/8"



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