At ValveLink Europe Ent., we are committed to providing robust and high-performance solutions for a multitude of industrial applications. We are proud to introduce the VMAL Double Ball Rubber Expansion Joint, an essential component engineered to enhance the integrity and longevity of your piping systems by absorbing movements and reducing stress
Engineered for Advanced Performance
The Double Ball Rubber Expansion Joint is expertly designed to provide superior flexibility in piping systems. Its distinctive twin-sphere or “double ball” construction allows for greater absorption of axial and lateral movements compared to single-sphere joints. This design is critical for compensating for thermal expansion and contraction, absorbing vibration, and reducing noise, thereby protecting your entire system from premature wear and failure.
Key Product Specifications:
- Type: Flange connection for secure and easy installation.
- Materials of Construction:
- Sphere (1): High-quality EPDM or NBR rubber, offering excellent resistance to various media and temperatures.
- Flange (2): Durable Carbon Steel (CS) for high strength and reliability.
- Working Pressure: Designed to handle a working pressure of PN16 (200PSI).
- Compliance with International Standards:
- Face to Face: API609, BS5155, DIN3202, ISO5752.
- Flange: DIN, BS, UNI, ISO, ANSI, AS, JIS.
- Mounting Flange: ISO5211.
Versatile Applications Across Industries
The robust design and versatile nature of the VMAL Double Ball Rubber Expansion Joint make it the ideal solution for a wide array of demanding environments and applications, including:
- HVAC systems
- Water Supply & Sewage treatment
- Food & Beverage processing
- Chemical, Petrochemical, and Processing plants
- Power and Utilities
- Pulp and Paper manufacturing
- Ship Building and marine applications
Movement Absorption Capabilities
The primary function of this expansion joint is to accommodate various types of displacement within a pipeline. The VMAL series offers significant movement compensation:
- Axial Movement: It can handle axial stretching from 30 mm to 35 mm and axial compression from 50 mm to 60 mm, depending on the size.
- Lateral Displacement: It allows for lateral displacement ranging from 35 mm to 45 mm, effectively absorbing transverse movements.
Detailed Dimensions and Sizing
We offer the Double Ball Rubber Expansion Joint in a comprehensive range of sizes to meet your specific project requirements, from DN50 (2 inches) up to DN400 (16 inches). Below is a sample of our available dimensions. For the full list, please refer to our technical data sheet.
| SIZE (in) | DN (mm) | L (mm) | Axial Stretch (mm) | Axial Compression (mm) | Lateral Displacement (mm) | Flange Dimensions (PN16) |
| 2 | 50 | 165 | 30 | 50 | 45 | D: 165, D1: 125, n-d1: 4-18 |
| 4 | 100 | 225 | 35 | 50 | 40 | D: 220, D1: 180, n-d1: 8-18 |
| 6 | 150 | 225 | 35 | 50 | 40 | D: 285, D1: 240, n-d1: 8-23 |
| 8 | 200 | 325 | 35 | 50 | 40 | D: 340, D1: 295, n-d1: 12-23 |
| 12 | 300 | 325 | 35 | 60 | 35 | D: 460, D1: 410, n-d1: 12-27 |
| 16 | 400 | 325 | 35 | 50 | 40 | D: 580, D1: 525, n-d1: 16-30 |
Choose Valvelink for Unmatched Quality
The VMAL Double Ball Rubber Expansion Joint from ValveLink Europe Ent. represents our dedication to delivering reliable, high-quality products that meet stringent international standards. By integrating these components into your systems, you are investing in the safety, efficiency, and longevity of your operations.
Contact us today to learn more about how the VMAL Double Ball Rubber Expansion Joint can be integrated into your next project. Our team of experts is ready to assist you with technical specifications and purchasing inquiries.
