Threaded Rubber Expansion Joints / With Union Connections
TECHNICAL DESCRIPTION
• They are used in various joints with the presence of vibrations, axial and lateral displacements
• They are also used as joints in pipelines operating with pressure and vacuum
Dimensions:DN 20 – 80 / 3/4″ – 3″
Threaded Rubber Expansion Joints with Union Connections are engineered to absorb thermal expansion, vibration, and noise in piping systems, ensuring operational integrity and longevity. These joints are designed for easy installation and maintenance, featuring robust union ends that allow for quick disconnection without system modification. Ideal for a wide range of industrial applications, including HVAC, plumbing, and process piping, they provide superior flexibility and stress relief.Constructed from high-grade, durable rubber compounds, these expansion joints resist abrasion, chemicals, and extreme temperatures. The threaded union connections ensure a secure, leak-proof seal, compatible with standard piping components. This design minimizes downtime during maintenance or system adjustments, making them a cost-effective solution for dynamic piping environments.Absorbs vibration, noise, and thermal movementThreaded union ends for easy installation and removalManufactured from chemical and abrasion-resistant rubberSuitable for HVAC, water treatment, and industrial systemsReduces pipe stress and prevents damage to equipment
Materials
| No. | DETAILS | MATERIALS |
|---|---|---|
| 1 | Corrugated part - inner layer | EPDM |
| 2 | Corrugated part - middle layer | PA (Nylon) |
| 3 | Corrugated part - outer layer | EPDM |
| 4 | Connection ends | steel 1.0619 |
Features
| SPECIFICATION | |
|---|---|
| Standard | DIN |
| Threaded connection | BSPP thread |
| Maximum pressure at 20 °C | 10 bar |
| Construction length | 200mm |
| Pipe diameter | 3/4 - 3" |
| Displacement, axial + | 6mm |
| Displacement, axial - | 22 mm |
| Displacement, lateral +/- | 22 mm |
| DN | D | L | E | MAXIMUM RECORDED DISPLACEMENT (mm) | vacuum | weight | |||
|---|---|---|---|---|---|---|---|---|---|
| BSPP | (mm) | (mm) | contraction | stretching | lateral | angular | (bar) | (kg) | |
| 20 | 3/4" | 200 | 53.9 | 22 | 6 | 22 | 30 | 0.5 | 0.7 |
| 25 | 1" | 200 | 66.1 | 22 | 6 | 22 | 30 | 0.5 | 1.2 |
| 32 | 1 1/4" | 200 | 72.4 | 22 | 6 | 22 | 30 | 0.5 | 1.6 |
| 40 | 1 1/2" | 200 | 89.3 | 22 | 6 | 22 | 30 | 0.5 | 2.0 |
| 50 | 2" | 200 | 101.6 | 22 | 6 | 22 | 30 | 0.5 | 2.7 |
| 65 | 2 1/2" | 240 | 124.4 | 22 | 6 | 22 | 30 | 0.5 | 4.5 |
| 80 | 3" | 240 | 138.6 | 22 | 6 | 22 | 30 | 0.5 | 5.0 |