4-Convolution-Flex Bellows DN21.5 – D30 without pipe opening

4-Convolution-Flex Bellows DN21.5 – D30 without pipe opening

• Excellent flexibility & displacement compensation

  With 4 convolution structure, it provides greater axial expansion, angular deflection and radial offset, effectively absorbing thermal expansion, installation misalignment and mechanical vibration.
• Leakproof & fully enclosed design

  Without pipe opening, the bellows is integrally formed for a tight, sealed structure. It eliminates leakage points, prevents media loss and external contamination, ideal for clean, gas or vacuum applications.
• Compact size & easy installation

  Precision size DN21.5–D30 fits narrow spaces and small equipment. Its closed-end design allows direct welding or mounting, simplifying assembly and improving stability.
• Long service life & high durability

  Made of flexible and corrosion-resistant material, it features low stiffness, good resilience and long fatigue life, ensuring stable performance under frequent movements.

• 4-ply structure for strong flexibility, effective vibration damping and displacement compensation
• Compact DN21.5×D30 size ideal for narrow installation spaces
• No pipe opening design for lighter weight, easier installation & lower cost
• High durability, pressure & corrosion resistant for long service life