描述
DEVEL PTFE Lined Rubber Expansion Joints are technically engineered for aggressive chemical transport and highly corrosive piping systems where standard synthetic elastomers degrade. By mechanical-bonding a virgin Polytetrafluoroethylene (PTFE/F4) or FEP/F46 interior liner to a heavy-duty EPDM or NBR rubber bellows shell, these advanced flexible connectors provide absolute chemical inertness combined with exceptional multi-axis thermal expansion and vibration compensation.
Material Architecture & Technical Features
- Extreme Chemical Inertness: Seamless PTFE liner provides unparalleled resistance against concentrated strong acids, toxic caustics, alkali chemical compounds, and aggressive organic solvents.
- Robust Reinforcement Frame: Outer elastomeric matrix is structural-reinforced with multi-layer high-tensile synthetic fiber plies and embedded steel wire carcasses to prevent pressure deforming.
- Advanced Anti-Scaling Geometry: The ultra-smooth, non-stick interior lining surface actively prevents crystallization, chemical scale accumulation, and severe fluid drag forces.
- Universal Flange Integration: Mating flanges are drilled in strict compliance with global specifications including ANSI/ASME B16.5, DIN, BS, EN1092, and JIS, using Carbon Steel Q235 or Stainless Steel 304/316.
Technical Properties & Operating Limits
| Technical Parameter | Engineering Specification |
|---|---|
| Product Identification | PTFE Lined Rubber Expansion Joint (Teflon Lined Flexible Connector) |
| Lining Compound Options | Virgin PTFE (F4), FEP (F46), Food-Pharma Grade FDA Compliant Fluoropolymers |
| Design & Testing Standards | GB/T 26121, HG/T 20592, AWWA C219, ISO 9001 Certified Quality Control |
| Standard Pressure Classes | PN10 / PN16 | Class 150 (Custom heavy-duty pressure configurations engineered on request) |
| Thermal Tolerance Range | -30°C to +150°C (subject to external elastomeric backing selection) |
Standard Dimensions & Multi-Axis Movements
| Nominal Diameter | Install Length | Axial Movement (mm) | Lateral Movement | Angular Movement | ||
|---|---|---|---|---|---|---|
| mm (DN) | inch | Face-to-Face (mm) | Extension | Compression | Displacement (mm) | Deflection (α1+α2)° |
| 32 | 1.25 | 90 | 6 | 10 | — | — |
| 40 | 1.5 | 95 | 6 | 10 | — | — |
| 50 | 2 | 105 | 6 | 10 | 10 | 25° |
| 65 | 1.5 | 115 | 8 | 15 | 12 | 25° |
| 80 | 3 | 135 | 8 | 20 | 12 | 25° |
| 100 | 4 | 150 | 12 | 20 | 16 | 15° |
| 125 | 5 | 165 | 12 | 20 | 16 | 15° |
| 150 | 6 | 180 | 12 | 20 | 16 | 15° |
| 200 | 8 | 210 | 30 | 30 | 16 | 15° |
| 250 | 10 | 230 | 30 | 30 | 25 | 8° |
| 300 | 12 | 245 | 30 | 30 | 25 | 8° |
| 350 | 14 | 255 | 30 | 30 | 25 | 8° |
| 400 | 16 | 255 | 30 | 30 | 25 | 8° |
| 450 | 18 | 255 | 30 | 30 | 25 | 8° |
| 500 | 20 | 255 | 30 | 30 | 25 | 8° |
| 600 | 24 | 260 | 30 | 30 | 25 | 8° |
Engineering Note: Dimensional tolerances above follow general standard configurations. For industrial systems managing continuous negative pressure, specialized vacuum-resistant internal supporting rings can be dynamic-integrated into the design. Larger diameters exceeding DN600 are customizable upon precise technical drawings review.
Target Applications & Environments
DEVEL PTFE-lined corrosion resistant connectors are heavily prioritized across advanced automated process sectors:
- Chemical & Acid Pickling Lines: Complete isolation against severe raw media transfer lines.
- Power Generation FGD Arrays: Integrated into high-velocity Flue Gas Desulfurization scrubbing units.
- Semiconductor & Electronics Facilities: Prevents fluid contamination within critical ultra-pure chemistry processing lines.
- Pharmaceutical & FDA Operations: Utilizes non-stick, hygienic properties of pure PTFE for clean industrial fluid movement.
