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 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" | |||
"Your engineers were a tremendous help in getting this order pushed thru for a quick turnaround to support our field needs."
Fabricated pipe shoes, guides, anchors - November 2021
"Thank you very much for the excellent work you and your associates at PTP/USB provided on my order..."
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High Temperature Insulated Supports - December 2021
"PT&P continues to provide excellent products and a world-class customer service experience..."
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Misc. Steel fabrication - February 2022
"PT&P provides excellent sales and product support. The company clearly makes an effort to be clear about design selection, order support and product delivery. Keep up the good work."
Pipe Hanger Hardware - December 2021
"My impression of your technical and production engagement is very positive."
Expansion Joints Metal Bellows - January 2021
"Good experiences with you all on Expansion Joints in the past."
Expansion Joints Metal Bellows - October 2021
"I sincerely thank all of you for your efforts to date and encourage all of you to continue the excellent performance and commitment to the projects."
Single Expansion Joint - 2020
"We are pleased with the Customer Service and care we have received from our project."
Fabric Expansion Joint - November 2021