PTFE Expansion Joints for Chemical Processing
Product Overview
Polytetrafluoroethylene (PTFE) Expansion Joints are flexible connectors designed for industrial piping systems. They compensate for thermal expansion, vibration, and misalignment while resisting extreme temperatures and corrosive media.
Key Features & Material Properties
| Property | Details |
|---|---|
| Corrosion Resistance | Resists acids, alkalis, solvents (e.g., HCl, H₂SO₄). |
| Temperature Range | -180°C to +260°C (300°C short-term with custom design). |
| Low Friction | Smooth surface minimizes flow resistance. |
| Reinforcement | Optional stainless steel mesh/braiding for high-pressure applications. |
Technical Parameters (Standard Models)
Pressure & Compensation
| Parameter | Standard Range | Example (DN100 Model) |
|---|---|---|
| Nominal Pressure (PN) | 0.6–1.6 MPa | 1.0 MPa |
| Axial Compensation | 5–20 mm | ±10 mm |
| Lateral Compensation | 3–10 mm | 5 mm |
| Angular Compensation | ±1°–±5° | ±3° |
Dimensions & Connections
| Parameter | Range/Options |
|---|---|
| Pipe Diameter | DN15–DN600 |
| Connection | Flange (ANSI/DIN), Thread (NPT/BSP), Clamp |
Enhanced Specifications (Custom Models)
- High-Pressure Design: Up to PN4.0 MPa with metal overlay.
- Extended Compensation:
- Axial: 25 mm (max)
- Lateral: 15 mm (requires guide system)
- Material Options:
- Pure PTFE (FDA-compliant for food/pharma)
- PTFE + EPDM hybrid (improved flexibility)
Application Scenarios
- Chemical Industry:
- Acid transfer pipelines (e.g., DN200, PN1.0 MPa, 15 mm axial compensation).
- Power Generation:
- Steam lines (custom 300°C-rated joints with PN2.5 MPa).
- Pharmaceuticals:
- Sterile processing systems (FDA-grade PTFE, threaded connections).
Installation Guidelines
- Pre-Installation:
- Check alignment tolerance: ≤1 mm/m for axial compensation.
- Mounting:
- Avoid twisting; use alignment rods for lateral compensation >8 mm.
- Post-Installation:
- Perform pressure test at 1.5×PN for 30 minutes.
Compliance & Support
- Certifications: ISO 9001, ASME B31.3, PED 2014/68/EU.
- Warranty: 2-year coverage with 24/7 technical support.
For full technical drawings and material test reports, get our product dossier or contact info@sukoptfe.com.
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