The rectangular non-metallic compensator is primarily used in power plant flue gas ducts to absorb thermal displacement and/or reduce vibration. The connection methods for rectangular non-metallic compensators can be divided into flange connection and pipe connection.

Non-metallic Compensator Types: Non-metallic compensators can be categorized into straight-tube non-metallic expansion joints, compound non-metallic expansion joints, angular non-metallic expansion joints, and square non-metallic expansion joints.

Characteristics of rectangular non-metallic compensators:

1. Compensation for thermal expansion: Non-metallic expansion joints can compensate in multiple directions, significantly outperforming metal compensators that can only provide single-direction compensation.

2. Compensation for Installation Errors: Due to inevitable system errors during the pipeline connection process, fiber compensators and non-metallic expansion joints effectively compensate for installation errors.

3. Non-metallic expansion joints for noise and vibration reduction: The fibrous fabric and thermal insulation materials inherently possess sound-absorbing and vibration-isolation properties, effectively reducing noise and vibration in systems such as boilers and fans.

4. Zero-reaction force: Due to the flexible non-metallic expansion joints and the main material of non-metallic expansion joints being fiber fabric, there is no transmission of force. The use of non-metallic compensators and fiber compensators can simplify the design, avoid the need for large supports, and save a significant amount of materials and labor.

5. Excellent High-Temperature and Corrosion Resistance: The fluoroplastic and silicone materials used in non-metallic expansion joints exhibit good high-temperature and corrosion resistance properties.