Durapipe HTA Plain Nipples
Technical Specification
- Manufacturer: Durapipe
- Material: Chlorinated polyvinyl chloride (CPVC)
- Application: Hot and cold water distribution
- Connection type: Plain ends, solvent weld
- Operating temperature range: 5°C to 90°C
- Maximum working pressure: Up to 25 bar
- Pressure rating at 70°C: 10 bar
- Suitability: Potable (drinking) water
- Fire classification: Euroclass B-s1,d0
- Approvals: WRAS approved
- System compatibility: HTA matched pipe, fittings and valves
Description
HTA plain nipples are designed to provide a short, straight connection between fittings or pipework within pressurised hot and cold water systems. Manufactured from high-performance CPVC, they offer excellent strength and dimensional stability, making them suitable for demanding applications where space or alignment is critical.
The smooth internal bore promotes efficient water flow while helping to reduce frictional losses, limescale formation and the risk of biofilm development. With no susceptibility to corrosion, the fitting supports long-term system reliability and helps maintain water quality throughout its service life.
As part of the HTA system produced by Aliaxis, these plain nipples integrate seamlessly with compatible HTA pipes, fittings and valves. Lightweight construction and solvent weld installation allow for quick, clean assembly without hot works, providing a practical and cost-effective alternative to traditional metal connectors.
Key Features & Benefits
- High pressure capability: Suitable for systems operating up to 25 bar
- Compact connection: Ideal for short joins and tight installation spaces
- WRAS approved: Certified for potable water applications
- Smooth bore design: Helps minimise friction, scale and biofilm risk
- Corrosion free material: Will not rust or degrade over time
- Wide temperature tolerance: Designed for use from 5°C to 90°C
- Fire performance: Achieves Euroclass B-s1,d0 classification
- HTA system matched: Engineered specifically for use with HTA pipes and fittings

| Product Code | D (mm) | L (mm) | d (mm) |
| 354364 | 20 | 37 | 15.5 |
| 354365 | 25 | 42 | 19.5 |
| 354366 | 32 | 49 | 25 |
| 354367 | 40 | 57 | 31 |
| 354368 | 50 | 67 | 39 |
| 354369 | 63 | 80 | 49 |
| 354370 | 75 | 92 | 64 |
Working Pressures & Temperatures
| Temperature °C | (PN25) 70°C / 10 bar 60°C / 6 bar | (PN16) 70°C / 6 bar 60°C / 4 bar |
| Pressure (bar) | Pressure (bar) | |
| 5 | 25 | 16 |
| 20 | 25 | 16 |
| 40 | 20 | 12 |
| 60 | 13 | 8 |
| 70 | 10 | 6 |
| 80 | 6 | 4 |
| 90 | 4 | 2 |
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