1. Applicable Media: Air, flue gas, and dust-containing gas.

2. Pressure (P): -20 to 30 kPa

3. Operating Temperature (t): Refer to the above-set working temperature, ≤450°C.

4. Compensation Volume: Xo represents the axial compensation volume, with a negative sign indicating compression deformation; Yo represents the lateral compensation volume. The specific compensation volume is as specified in the table above.

5. Material

a. Metal structural components are typically recommended to use materials with a temperature rating of t≤400°C, such as Q235-A; at 400°C (t≤450°C), materials 10 or Q345 (16Mn) should be used. Other materials should be considered for design purposes.

b. Compensation expanders are composed of non-metallic ring bands and thermal barrier materials, which include a variety of materials such as glass fiber fabrics, polytetrafluoroethylene films, composite rubber-glass fiber fabrics, and aluminum silicate fiber cotton, depending on different operating temperatures. Asbestos-containing materials are prohibited from being used in the manufacturing of non-metallic compensation expanders.

6. Connection Method: Standard is socket welding, where the pipe is inserted into the compensator's interface, with an insertion depth of 20mm. Flanged connection is also available, with the same product length and compensation as the socket-welded pipe. Compensators are categorized into metallic and non-metallic types. The elastic element that forms the main working body of the compensator is made of non-metallic material, typically fiber fabric, hence also known as fabric compensators (expansion joints, flexible joints). There is also rubber material, which can substitute for fiber fabric in all other conditions except when high temperatures (above 400°C) are involved.