Plasson Mains Stop Valve Threaded
Useful Information
Technical Specification
- Material: Glass-reinforced polyamide (non-metallic)
- Connection Type: Threaded
- Valve Type: Quarter-turn ball valve
- Pressure Rating: 16 bar
- Pipe Compatibility: 50mm and 63mm mains water pipe
- Application: Cold water mains, above or below ground
- Certification: WRAS approved
Description
The Plasson mains stop valve threaded is a high-performance, non-metallic solution for controlling water flow in mains supply systems. Manufactured from glass-reinforced polyamide, this valve meets the utilities sector’s demand for lead-free components while offering a full bore, quarter-turn ball valve action that reduces head loss. Rated to 16 bar and WRAS approved for use with 50mm and 63mm mains water pipe, it is suitable for both above and below ground installations. A version with integrated drain ports is also available.
Key Features & Benefits
- Non-metallic, lead-free construction using glass-reinforced polyamide
- Quarter-turn ball valve design for minimal head loss and full bore flow
- WRAS approved – first non-metallic valve approved for 50mm and 63mm mains pipe
- Threaded connection for ease of integration
- Optional version available with drain ports

| SKU | Size (inch) | DN (mm) | A1 (mm) | A2 (mm) | H (mm) | I (mm) | B (mm) | E (mm) | W (mm) |
| 374309 | 3/4 | 20 | 27 | 54 | 97 | 17 | 36 | 53 | 175 |
| 374310 | 1 | 25 | 33 | 64 | 116 | 21 | 46 | 64 | 313 |
| 374311 | 1 1/4 | 32 | 36 | 70 | 118 | 20 | 55 | 73 | 393 |
| 374312 | 1 1/2 | 40 | 45 | 87 | 144 | 24 | 65 | 91 | 712 |
| 374313 | 2 | 50 | 53 | 97 | 162 | 29 | 75 | 100 | 918 |
