FRP Backing Ring DN250 for PVC Pipes
Article BRPVC-250-310-10/150 · Drilling ANSI B16.47 Class 150 B16.5 Class 150 · Working pressure up to 10 Bar
BRPVC-250-310-10/150
- Material: FRP (Fiber Reinforced Plastic)
- Pipe system: PVC
- Nominal size: DN250
- Max pressure: 10 Bar
- Drilling: ANSI B16.47 Class 150 B16.5 Class 150
- Manufacturing: High-pressure Hot Pressing
Technical Specifications
| Property | Value |
|---|---|
| Article number | BRPVC-250-310-10/150 |
| Pipe system | PVC |
| Nominal diameter (DN) | 250 mm |
| Max working pressure | 10 Bar |
| Drilling standard | ANSI B16.47 Class 150 B16.5 Class 150 |
| Pipe OD | 280 mm |
| Outer diameter (D) | 405 mm |
| Inner diameter (d1) | 310 mm |
| Inner stub OD (d10) | 306 mm |
| Radius (r1) | 3 mm |
| Bolt circle (k) | 362 mm |
| Bolt holes | 12 |
| Bolt hole diameter (d2) | 26 mm |
| Thickness (b1) | 42 mm |
| Material | FRP (Fiber Reinforced Plastic) |
| Manufacturing process | High-pressure Hot Pressing (SMC) |
| Quality | ISO 9001 certified |
About this Backing Ring
This BRPVC-250-310-10/150 is an FRP (Fiber Reinforced Plastic) Backing Ring designed for use behind PVC stub flanges in industrial piping systems. With a nominal size of DN250 and working pressure rated up to 10 Bar, it carries the bolt load on flanged connections to other equipment - pumps, valves, vessels, or matching steel flanges - without distorting the plastic pipe.
The drilling pattern matches ANSI B16.47 Class 150 B16.5 Class 150, ensuring drop-in compatibility with industry-standard counter-flanges. Manufactured by high-pressure Hot Pressing using Sheet Molding Compound (SMC), this size range is produced at scale with consistent wall thickness, precise bolt-hole positioning and an excellent surface finish.
Like all FRP Backing Rings from BackingRing.com, this part is fully corrosion-free, lightweight relative to a metal equivalent, and intended for service in chemical processing, water and wastewater treatment, mining, marine and other demanding environments.
Common applications for DN250 PVC Backing Rings
- Connecting PVC pipe spools to flanged pumps, valves and instrumentation
- Tie-ins between PVC sections and steel/ductile-iron piping in mixed-material plants
- Replacement of corroded metal backing rings in saltwater or chemical service
- OEM equipment skid assemblies requiring a lightweight, non-rusting flange backing
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We manufacture FRP Backing Rings up to DN4000 in custom drilling patterns and pressure classes. Talk to our engineering team.