描述
DEVEL Clamp-Type Rubber Expansion Joints represent a weight-optimized, boltless flexible connector engineering solution designed to accommodate multi-axis piping movements while isolating mechanical vibrations. By substituting heavy standard steel mating flanges with high-tensile stainless steel clamps, this design provides a compact profile that drastically minimizes structural weight and simplifies pipeline installation tolerances.
Key Structural & Operational Features
- Weight-Optimized Boltless Geometry: Eliminates conventional backing flanges and heavy fasteners, making it highly suitable for spatial-restricted areas and weight-sensitive modern pipeline layouts.
- Negligible Reactive Counter-Thrust Force: Structural elasticity absorbs high-frequency equipment vibration and acoustics without transmitting severe reactionary stress load back to pump headers or valve bodies.
- Multi-Material Pipe Adaptability: Engineered to provide comprehensive sealing performance across diverse piping substrates, including HDPE, PVC, Cast Iron, Carbon Steel, and Hot-Dip Galvanized Conduits.
- Reliable Sealing Integrity: Precision-molded elastomeric sealing face achieves uniform compression contact with the pipe outer diameter (OD) under heavy SS304 clamping tension, actively preventing process fluid leakage.
Technical Properties & Operating Limits
| Technical Parameter | Engineering Specification |
|---|---|
| Product Identification | Clamp-Type Rubber Expansion Joint (Slip-on Flexible Bellows Coupling) |
| Clamping Mechanism Material | Heavy-duty Stainless Steel 304 / SS316 (Worm Gear or Heavy T-Bolt design) |
| Maximum Working Pressure | PN ≤ 0.4 MPa (Low to Medium Pressure Applications) |
| Elastomeric Compound Matrix | NR (Natural Rubber), EPDM, High-Temperature Silicone, NBR (Nitrile), Neoprene |
| Target Engineering Environment | Commercial Construction, HVAC, Water Treatment Utilities, Industrial Fire Protection, Power Distribution |
Dimensional Matrices & Movement Capabilities
| Nominal Diameter (DN – mm) |
Face-to-Face Length (L – mm) |
Axial Extension (mm) |
Axial Compression (mm) |
Lateral Movement (mm) |
|---|---|---|---|---|
| DN25 – DN50 | 150 | 7 | 10 | 10 |
| DN65 – DN100 | 150 | 10 | 15 | 12 |
| DN125 – DN200 | 180 | 12 | 20 | 14 |
| DN250 – DN400 | 200 | 15 | 25 | 22 |
| DN450 – DN600 | 250 | 20 | 30 | 25 |
| DN700 – DN1000 | Fully Customized Based on Engineering Blueprints & Working Environment Tolerance | |||
Critical Field Installation Directives
- Tolerance Evaluation: Before locking parameters, verify that the raw outer diameter (OD) of the mating pipe perfectly aligns with the exact internal dimensions of the DEVEL flexible coupling.
- Torque Calibration: Smoothly slide the elastomeric bellows sleeve over the pipe interface, then tighten the high-strength SS304 clamping bands evenly to achieve an absolute compression leak-proof seal without cutting the rubber matrix.
- Operational Modification: For non-standard installation face-to-face gaps, continuous thermal stress, or specialized media handling (high concentration acid/alkali/high temperature), specific inner liner upgrades must be finalized during ordering phase.
