PPH Stub End Flange
The PPH Stub End Flange is a two-piece piping component designed for high-performance flange connections in industrial thermoplastic piping systems. Made from Polypropylene Homopolymer (PPH), the stub end provides a reliable transition from butt-welded piping to flanged joints, often paired with a backing flange made of metal or reinforced plastic.
This component is ideal for applications requiring frequent disassembly, such as chemical processing and water treatment facilities in the UAE, offering easy access for inspection, cleaning, or system modification while maintaining leak-proof performance.
PPH Stub End Flange
- Material Durability: Manufactured from corrosion-resistant PPH, suitable for aggressive chemicals and saline environments.
- Modular Design: Used with backing flanges (metal or thermoplastic) for flexible, bolt-together flanged connections.
- Thermal Stability: Performs under continuous temperatures up to 100°C, suitable for heated industrial fluid systems.
- High Chemical Resistance: Ideal for transporting acids, alkalis, salts, and other aggressive media.
- Fusion Weldable: Butt-weld compatible with PPH pipes, ensuring strong, leak-free integration.
- Low Maintenance: Smooth interior reduces scale buildup and minimizes pressure drop.
- UV-Resistant Option: Available with UV-stabilized properties for outdoor and exposed piping systems.
- Wide Compatibility: Matches international standards for flanged fittings in thermoplastic pipeline systems.
Technical Details of PPH Stub End Flange
| Specification | Details |
|---|---|
| Product Type | PPH Stub End Flange |
| Material | Polypropylene Homopolymer (PPH) |
| Connection Type | Butt weld (stub end) + backing flange (metal/PP/PVDF/etc.) |
| Standard Sizes | DN15 to DN315 (½" to 12"+) |
| Pressure Rating | PN10 / PN16 (depending on size and application) |
| Operating Temperature | 0°C to +100°C (short-term exposure up to 110°C) |
| Color | Light Grey (standard) |
| Density | ~0.91 g/cm³ |
| Tensile Strength | ≥25 MPa |
| Chemical Compatibility | Excellent – resists acids, alkalis, solvents, brines |
| UV Resistance | Optional (UV-stabilized variant for outdoor installations) |
| Applicable Standards | DIN 8077/8078, ISO 161, ISO 7005 |
| Common Applications | Chemical processing plants, desalination systems, water treatment, marine facilities, and industrial fluid handling systems |
| d (mm) | DN | b (mm) | d₃ (mm) | d₅ (mm) | H (mm) | Z (mm) |
|---|---|---|---|---|---|---|
| 20 | 15 | 6.8 | 27 | 45 | 20.3 | 5.5 |
| 25 | 20 | 9.0 | 33 | 58 | 22.3 | 6.0 |
| 32 | 25 | 10.0 | 41 | 68 | 24.8 | 6.5 |
| 40 | 32 | 11.0 | 50 | 78 | 26.8 | 5.5 |
| 50 | 40 | 12.0 | 61 | 88 | 30.0 | 5.5 |
| 63 | 50 | 14.0 | 76 | 102 | 33.8 | 5.5 |
| 75 | 65 | 16.0 | 90 | 122 | 37.8 | 6.5 |
| 90 | 80 | 17.0 | 107.5 | 138 | 43.8 | 7.5 |
| 110 | 100 | 18.0 | 131 | 158 | 50.0 | 7.5 |
- d – Outer Diameter of Pipe (mm)
- DN – Nominal Diameter (mm)
- b – Flange Ring Thickness (mm)
- d₃ – Inside Diameter of Stub End (mm)
- d₅ – Outer Diameter of Flange Collar (mm)\
- H – Overall Height (mm)
- Z – Flange Neck Height (mm)
Customization & Processing Options
Customizations Option Available for PPH 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
