UPVC Stub End Flange
The UPVC Stub End Flange is a two-part pipe fitting used in conjunction with a backing ring to create a secure, detachable flanged joint in a piping system. Made from Unplasticized Polyvinyl Chloride (UPVC), the stub end flange is highly resistant to corrosion and chemicals. It is commonly used in water supply, chemical handling, and industrial applications where easy disassembly and maintenance of the pipeline are required.
UPVC Stub End Flange
Key Features Of UPVC Stub End Flange
- Corrosion-Resistant Material: Suitable for use with aggressive chemicals and corrosive fluids.
- Detachable Joint Design: Allows for easy assembly, disassembly, and maintenance of piping systems.
- High Strength and Durability: Rigid construction with excellent mechanical performance.
- Smooth Surface Finish: Ensures tight sealing and minimizes leakage risk.
- Lightweight: Simplifies handling and reduces installation time.
- Compatible with Standard Flanges: Works with backing rings made from metal or plastic.

Technical Details of UPVC Stub End Flange
Parameter | Specification |
---|---|
Material | UPVC (Unplasticized Polyvinyl Chloride) |
Size Range | ½” to 12” (15 mm to 315 mm) |
Connection Type | Stub End with Loose Flange (Back Ring) |
Flange Standard | ANSI, DIN, BS |
Operating Pressure | Up to 10 bar (150 psi) |
Temperature Range | 0°C to 60°C (32°F to 140°F) |
Color | Usually Grey |
Applications | Water Supply, Chemical Processing, Irrigation, Industrial Piping |

Size (NB) | OD (mm) | ID (mm) | WT (mm) | L (mm) | H (mm) |
---|---|---|---|---|---|
15 (½″) | 21.34 | 15.80 | 2.77 | 26 | 16 |
20 (¾″) | 26.67 | 20.93 | 2.87 | 28 | 18 |
25 (1″) | 33.40 | 26.64 | 3.38 | 30 | 20 |
32 (1¼″) | 42.16 | 35.00 | 3.56 | 34 | 22 |
40 (1½″) | 48.26 | 40.89 | 3.68 | 36 | 24 |
50 (2″) | 60.33 | 52.51 | 3.91 | 40 | 25 |
65 (2½″) | 73.03 | 64.09 | 4.01 | 45 | 28 |
80 (3″) | 88.90 | 77.93 | 4.49 | 50 | 30 |
100 (4″) | 114.30 | 100.77 | 4.85 | 60 | 34 |
125 (5″) | 141.30 | 125.73 | 5.28 | 66 | 38 |
150 (6″) | 168.28 | 152.21 | 5.54 | 72 | 40 |
200 (8″) | 219.08 | 202.74 | 6.17 | 80 | 45 |
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OD – Outer Diameter
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ID – Inner Diameter
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WT – Wall Thickness
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L – Insert Length
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H – Stub Height (or Fitting Height)
UPVC Stub End Flange
Technical Specifications of UPVC Stub End Flange
Parameter | Specification |
Material | UPVC (Unplasticized Polyvinyl Chloride) |
Size Range | ½” to 12” (15 mm to 315 mm) |
Connection Type | Stub End with Loose Flange (Back Ring) |
Flange Standard | ANSI, DIN, BS |
Operating Pressure | Up to 10 bar (150 psi) |
Temperature Range | 0°C to 60°C (32°F to 140°F) |
Color | Usually Grey |
Applications | Water Supply, Chemical Processing, Irrigation, Industrial Piping |

Custom Product Manufacturing Available
If you are searching for customized product designs that meet your requirements, don’t worry. Petron Thermoplast also offers custom product manufacturing services to meet the unique needs of various industries. Work with our expert engineers to create custom designs suited for your application.