PP Threaded Barrel Nipple
Technical Specification
- Material: Polypropylene block copolymer (PP-B)
- Fitting type: Threaded barrel nipple
- Thread standard: To suit BS 4991:1974
- Pressure rating: 6 bar
- Operating temperature range: -20°C to 110°C (continuous)
- Size range: 1/2" to 4"
- Colour: Beige grey (RAL 7032)
- Manufacturing standard: DIN 16962
- Connection type: Male threaded ends (both sides)
Description
This polypropylene threaded barrel nipple is used to connect two female threaded fittings within a PP pipework system, providing a simple and effective inline connection without altering pipe direction or diameter. It is commonly installed where additional spacing, alignment correction or component extension is required.
Manufactured from high heat stabilised polypropylene block copolymer (PP-B), the fitting delivers strong resistance to chemicals, corrosion and mechanical wear, while maintaining excellent impact strength at low temperatures. The compact, straight-through design allows for efficient flow and straightforward installation in confined or modular pipe layouts.
As a threaded polypropylene fitting, the barrel nipple is pressure rated to 6 bar and is intended for low pressure applications where joints may need to be dismantled for maintenance or future system changes.
Key Features & Benefits
- Straight connection: Joins two female threaded fittings inline
- 6 bar pressure rating: Suitable for threaded polypropylene pipe systems
- Dual male threads: Provides a secure, removable joint on both ends
- PP-B construction: Enhanced impact resistance compared to homopolymer PP
- Wide temperature capability: Continuous operation from -20°C to 110°C
- Smooth internal bore: Minimises turbulence and pressure loss
- Corrosion resistant: Will not rust, scale or degrade in aggressive environments
- Lightweight design: Easier handling and installation than metal alternatives
- Industrial compatibility: Suitable for chemical processing, water treatment, laboratories, food production and general industrial pipework


| Product Code | d (inch) | I (mm) | Pressure Rating (bar) |
| 355673 | ½ | 55 | 6 |
| 355674 | ¾ | 58 | 6 |
| 355675 | 1 | 63 | 6 |
| 355676 | 1 ½ | 68 | 6 |
| 355677 | 2 | 76 | 6 |
| 355678 | 3 | 92 | 6 |
| 355679 | 4 | 115 | 6 |
