Union Plain x Brass M BSP
Technical Specification
- Product type: Union fitting, plain socket x brass male BSP
- Material: Chlorinated polyvinyl chloride (CPVC) with brass threaded insert
- Thread type: Male BSP
- Manufacturer: Durapipe
- Jointing method (plain end): Solvent welding using PVC-C solvent cement and cleaner
- Connection (threaded end): BSP male to standard threaded fittings
- Pressure rating: Up to 16 bar
- Manufacturing standard: DIN 8063
- Approvals: WRc listed
- System compatibility: Corzan CPVC pipe systems
Description
This composite union fitting provides a reliable transition between solvent welded Corzan CPVC pipework and metal systems via a brass male BSP connection. It is ideal where CPVC pipelines need to interface with valves, pumps, instrumentation or existing threaded metal components, while retaining the ability to disconnect for maintenance.
The plain socket end is solvent welded to CPVC pipe using PVC-C solvent cement and Eco-Cleaner, creating a secure, pressure-rated joint. The brass male BSP end offers a durable threaded interface, delivering improved mechanical strength and thread integrity in mixed-material installations.
Manufactured from high-performance Corzan CPVC with a non-toxic, taint-free formulation, the union performs reliably in hot and corrosive environments and is suitable for potable water systems. Its lightweight construction simplifies handling on site, while the demountable union design supports easier inspection, servicing and future system modifications.
Key Features & Benefits
- Mixed-material transition: Connects CPVC pipework to BSP threaded metal components
- Demountable union design: Allows easy disconnection for maintenance or replacement
- Brass male BSP thread: Provides durable, secure threaded connections
- Excellent chemical resistance: Suitable for acids, alkalis and aggressive fluids
- Pressure rated: Up to 16 bar for industrial applications
- No hot works required: Solvent welding avoids welding permits
- Lightweight construction: Easier handling than all-metal unions
- System matched: Fully compatible with Corzan CPVC pipes and accessories

| Product Code | A (mm) | B (mm) | Z1 (mm) | Pressure Rating (bar) |
| 351172 | 34 | 50 | 3 | 16 |
| 351173 | 40 | 59 | 3 | 16 |
| 351174 | 48 | 75 | 3 | 16 |
| 351175 | 55 | 81 | 3 | 16 |
| 351176 | 65 | 86 | 3 | 16 |
| 351177 | 79 | 99 | 3 | 16 |
| 351178 | 88 | 113 | 3 | 16 |
