Rubber Expansion Bellows Double Arc

About Rubber Expansion Bellows Double Arc

A Rubber Expansion Bellows (Single Arc), also called a Single Sphere Rubber Expansion Joint, is a flexible connector used in piping systems to absorb movement, vibration, noise, and thermal expansion.

Features

• Single-arch (single-sphere) design for flexibility
• Absorbs:
  • Axial compression and extension
  • Lateral movement
  • Angular deflection
• Reduces vibration and pump noise
• Compensates for thermal expansion
• Corrosion-resistant and maintenance-friendly

Typical Construction

• Inner Layer: EPDM, NBR, Neoprene, Butyl, or Natural Rubber (depending on the fluid)
• Reinforcement: Multiple layers of nylon/polyester tire cord fabric
• Outer Cover: Weather- and ozone-resistant rubber
• End Connections: Carbon steel, stainless steel, or galvanized steel flanges

Common Materials and Applications

Applications

• Water treatment plants
• HVAC systems
• Pump discharge and suction lines
• Chemical processing
• Marine piping
• Power plants
• Industrial process piping

Typical Specifications

• Size: DN25 to DN1200 (1"48")
• Pressure Rating: PN10, PN16, PN25
• Temperature Range:
  • EPDM: -20C to +110C
  • NBR: -20C to +90C
• Flange Standard: ANSI 150, DIN, BS, JIS, IS

Advantages

• Excellent vibration isolation
• Reduces pipe stress
• Easy installation
• No lubrication required
• Long service life
• Low maintenance

If you are looking to procure one, please provide:

1. Pipe Size (DN/NB)
2. Pressure Rating (PN10/PN16/ANSI 150, etc.)
3. Flange Standard (DIN/ANSI/JIS/IS)
4. Fluid (water, oil, chemical, steam, etc.)
5. Operating Temperature
6. Required Movement (if known)