CPVC Stub End Flange
The CPVC Stub End Flange is a vital component in piping systems where detachable connections are required. Designed to be used with a backing ring or flange, this stub end allows for quick disassembly of pipe sections for inspection, cleaning, or replacement. Made from Chlorinated Polyvinyl Chloride (CPVC), it provides superior corrosion resistance, high temperature tolerance, and excellent mechanical strength. CPVC stub end flanges are ideal for industrial fluid handling systems that involve aggressive chemicals and elevated temperatures.
CPVC Stub End Flange
- High Temperature Resistance: Suitable for hot water and high-temperature chemical applications up to 93°C (200°F).
- Chemical Resistance: Withstands a broad range of acids, bases, salts, and organic compounds.
- Durable Construction: Tough and rigid structure ensures longevity and mechanical reliability.
- Easy Assembly and Disassembly: Facilitates maintenance or system changes without cutting the pipe.
- Lightweight: Easier to handle and install compared to metal flanges.
- Corrosion-Free: CPVC material is inherently resistant to rust, scaling, and microbial growth.
- Cost-Effective Alternative: Offers performance similar to metal components at a lower cost.
Technical Details of CPVC Stub End Flange
| Specification | Details |
|---|---|
| Material | CPVC (Chlorinated Polyvinyl Chloride) |
| Size Range | ½” to 12” (15 mm to 315 mm) |
| End Type | Stub end for use with backing ring or flange |
| Pressure Rating | PN10 / SCH 80 / Class 150 (varies by standard) |
| Temperature Range | Up to 93°C (200°F) |
| Standard Compliance | ASTM D1784 (Cell Class 23447-B), DIN, ISO |
| Chemical Compatibility | Excellent resistance to acids, alkalis, salts, and organics |
| Color | Light Grey |
| Installation | Typically joined using solvent cement |
| Applications | Industrial piping, chemical processing, water treatment, HVAC |
| Size | L | M | N | O.D. | R | Bolt Circle Dia. | No of Bolts |
|---|---|---|---|---|---|---|---|
| 1/2 | 1-1/16 | 1-9/32 | 5/32 | 3-1/2 | 9/16 | 2-3/8 | 4 |
| 3/4 | 1-3/16 | 1-1/2 | 3/16 | 3-7/8 | 5/8 | 2-3/4 | 4 |
| 1 | 1-5/16 | 1-13/16 | 3/16 | 4-1/4 | 11/16 | 3-1/8 | 4 |
| 1-1/4 | 1-13/32 | 2-3/16 | 5/32 | 4-5/8 | 11/16 | 3-1/2 | 4 |
| 1-1/2 | 1-21/32 | 2-1/2 | 1/4 | 5-1/32 | 13/16 | 3-7/8 | 4 |
| 2 | 1-23/32 | 2-7/8 | 7/32 | 5-15/16 | 7/8 | 4-3/4 | 4 |
| 2-1/2 | 2-1/4 | 3-1/2 | 15/32 | 7 | 1-1/16 | 5-1/2 | 4 |
| 3 | 2-5/16 | 4-9/32 | 7/16 | 7-9/16 | 1-3/32 | 6 | 4 |
| 4 | 2-15/32 | 5-1/4 | 7/32 | 9-1/16 | 1-5/16 | 7-1/2 | 8 |
| 5 | 3-7/32 | 6-3/8 | 3/16 | 10-3/16 | 1-1/32 | 8-1/2 | 8 |
| 6 | 3-5/16 | 7-19/32 | 9/32 | 10-15/16 | 1-13/32 | 9-1/2 | 8 |
| 8 | 4-21/32 | 9-3/4 | 19/32 | 13-17/32 | 1-23/32 | 11-11/16 | 8 |
| 10 | 5-15/32 | 11-13/16 | 15/32 | 16 | 1-3/4 | 14-1/4 | 12 |
| 12 | 6-5/8 | 14 | 5/8 | 19 | 2-1/4 | 17 | 12 |
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L – Overall Length
-
M – Diameter of Bolt Circle (or Center-to-Center Distance between Bolts, depending on flange type)
-
N – Bolt Hole Diameter
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O.D. – Outside Diameter
-
R – Raised Face Diameter / Radius to Bolt Circle (varies by standard)
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Bolt Circle Dia. – Diameter of the Bolt Circle (centerline through all bolt holes)
-
No of Bolts – Number of Bolts

Customization & Processing Options
Customizations Option Available for CPVC Stub End Flange
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
