UPVC Backing Rings
UPVC Backing Rings are essential components used in conjunction with stub ends and flanged joints to provide strong mechanical support and secure sealing in piping systems. Manufactured from high-grade Unplasticized Polyvinyl Chloride (UPVC), these rings offer excellent corrosion resistance, dimensional stability, and compatibility with various plastic pipe systems. They are ideal for water supply, irrigation, chemical processing, and industrial applications.
UPVC Backing Rings
Key Feature of UPVC Backing Rings
- Flange Support Functionality: Enhances the strength of flanged joints when used with stub ends.
- Corrosion Resistant: Inert to most chemicals, acids, and corrosive environments.
- Rigid & Durable: Maintains structural integrity under mechanical and hydraulic stress.
- Lightweight Design: Easier handling and installation compared to metal alternatives.
- Dimensional Accuracy: Ensures precise alignment and reliable sealing.
- Compatible with Multiple Standards: Fits standard flange dimensions (DIN, ANSI, etc.).
Technical Details of UPVC Backing Rings
| Parameter | Specification |
|---|---|
| Standard Compliance | ASTM D2467 (Socket Dimensions), ANSI B16.5 Class 150 (Flange Drilling) |
| Type | VanStone Style (Loose Backing Ring) |
| Size Range | DN15 (½″) to DN110 (5″) |
| Material | Industrial-grade Lead-free uPVC |
| Application | Suitable for SCH 80 piping systems |
| Use Case | Chemical plants, potable water, corrosive fluid systems |
| Max Operating Temp | Up to ~60 °C |
| Design Benefit | Allows ease of alignment and disassembly |
Technical Measurement of UPVC Backing Rings
| Nominal Pipe | Pipe OD (mm) | Ring OD D (mm) | Bolt Circle PCD (mm) | Holes × Dia (mm) |
|---|---|---|---|---|
| ½″ (DN15) | ~21.3 | ~89 | ~60.3 | 4 × ~16 |
| ¾″ (DN20) | ~26.7 | ~98.6 | ~69.8 | 4 × ~16 |
| 1″ (DN25) | ~33.4 | ~108 | ~79.4 | 4 × ~16 |
| 1¼″ (DN32) | ~42.2 | ~117.3 | ~88.9 | 4 × ~16 |
| 1½″ (DN40) | ~48.3 | ~127 | ~98.5 | 4 × ~16 |
| 2″ (DN50) | ~60.3 | ~152.4 | ~120.6 | 4 × ~19 |
| 2½″ (DN65) | ~73.0 | ~177.8 | ~139.7 | 4 × ~19 |
| 3″ (DN80) | ~88.9 | ~190.5 | ~152.4 | 4 × ~19 |
| 4″ (DN100) | ~114.3 | ~228.6 | ~190.5 | 8 × ~19 |
- OD – Outer Diameter
- PCD – Pitch Circle Diameter (for flange bolt circle)
- D – Outside Diameter (often used interchangeably with OD)
- Holes × Dia – Number of Bolt Holes × Diameter of Each Hole
Customization & Processing Options
Customizations Option Available for UPVC Backing Rings
At Petron Thermoplast, we offer customized PVDF fittings to meet your specific system requirements.
Customization options include:
- Tailor-made dimensions and wall thicknesses
- Custom-molded and machined PVDF fittings
- Pre-fabricated manifolds and assemblies
- Choice of connection type (butt fusion, socket fusion, or flanged)
- OEM branding or marking options
