Fig. IV-4801 · HVAC & Industrial
Flap Valve
Outfall backflow prevention, gravity systems
Gravity-operated flap valve preventing tide, flood or downstream backflow through outfalls and drainage systems — self-acting, zero energy.
Products are supplied to the stated API / ISO / ASME / AWWA standards from qualified manufacturers for projects in Saudi Arabia, including Dammam, Jubail, Yanbu, Riyadh, Jeddah and the Eastern Province. Certifications, monograms and listings are those of the manufacturing plant and are provided as specified in the purchase order.
Technical specifications
| Figure number | IV-4801 |
|---|---|
| Size range | 4″ – 48″ (DN100 – DN1200) |
| Pressure rating | Low head, gravity |
| End connections | Flanged / wall thimble |
| Typical materials | As specified on the project datasheet |
| Design standards | Manufacturer standard |
| Certifications (per manufacturer) | Available per manufacturer |
Key features
- Neoprene seat for drip-tight closure
- Double-hinged HDPE or DI door
- Wall, flange or spigot mounting
- Minimal opening head
