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
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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.
Duct Expansion Joint – Rectangular & Round – Low Temperature
| Pressure | 3 p.s.i (Max), Positive Pressure only | ||||
| Temperature | 400 ° F (Max) -- 40 ° F (Min) | ||||
| Movements | Flange - to - Flange Dimension | ||||
| 10" | 12" | 14" | 16" | 18" | |
| Axial Compression | ½" | 1" | 1½" | 2½" | 3" |
| Axial Extension | ½" | ½" | ½" | ½" | ½" |
| Lateral Offset | ¼" | ½" | ¾" | 1" | 1" |
Duct Expansion Joint – Rectangular & Round – High Temperature
| Pressure | 3 p.s.i (Max) 27" H 2 O (Vacuum Max) | ||||
| Temperature | 600 ° F (Max), -- 40 ° F (Min) specify | ||||
| Movements | Flange - to - Flange Dimension | ||||
| 10" | 12" | 14" | 16" | 18" | |
| Axial Compression | ½" | ¾" | 1¼" | 1½" | 2" |
| Axial Extension | ½" | ½" | ½" | ½" | ½" |
| Lateral Offset | ¼" | 3/8" | |||
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