MULTI N Inclined end-line flap-valve with flange
Specifications
MULTI N is a flap valve model designed for direct connection on any type of pipeline with the NORHAM Flexible multi-material couplings.
MULTI N is a flap valve especially designed to prevent backflow into sewers and protect properties against flooding.
Product not suitable for use in marine environments (swell, swirls). Please contact us for further information.
The MULTI N flap valve is recommended for properties located close to waterways and bodies of water (streams, rivers, embankments, ponds ...) where the surface water is directly discharged through an outfall into the watercourse.
It prevents the water from rising up through the sewer (heavy rain, storms or floods) and causing flooding.
- Made from glass fibre reinforced isophtal acid polyester and coated in an isophtal acid Gel-Coat, the new MULTI N flap valve design from NORHAM offers superior resistance, all while further reducing its weight.
- The screws and bolts as well as the valve’s axle are made from grade 1.4401 (316) stainless steel and the seal is made out of EPDM.
- The MULTI N valve can withstand pressures of up to 1 bar and is highly resistant to corrosion, ultraviolet light, thermal shocks and mechanical stress.
Options
All NORHAM flap valves can be equipped, if necessary, with a lifting ring nut for quick and easy handling from a distance.
Norham can also deliver you purpose-built solutions for your specific applications
(See some of our purpose-built projects).
Discover the manufacturing process for our valves, take a virtual tour of our workshops.
Installation / Application
The MULTI N valves are installed using the NORHAM Flexible couplings.
The NORHAM Flexible couplings allow the valve to be adapted to all types of pipeline.
For the sake of ease of fitting, it may be helpful to remove the door.
Use an Allen key for this.
The coupling is already fixed to the MULTI N valve in our factories before being delivered.
- Position the “female” end of the flap valve equipped with the coupling onto the pipe.
- Centre the valve.
- Tighten all the fastenings of the NORHAM Flexible connection couplings evenly.
- Reposition the door and its axial system.
- Tighten all the screws.
Dimensions
| Ref. | ND | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| MULTI-200-N | 200 | 224 | 216 | 205 | 202 | 11 | 345 | 1,2 |
| MULTI-250-N | 250 | 284 | 280 | 225 | 263 | 12 | 399 | 1,9 |
| MULTI-315-N | 300 | 335 | 332 | 265 | 318 | 15 | 480 | 3 |
| MULTI-400-N | 400 | 420 | 417 | 295 | 405 | 16 | 570 | 5,0 |
| MULTI-500-N | 500 | 528 | 522 | 320 | 506 | 17 | 678 | 9,4 |
| MULTI-600-N | 600 | 659 | 655 | 345 | 638 | 18 | 808 | 13,5 |
