The product
As a result, DEMBLA Check Valve operates in a fast way and closes silently. Check Valve body is design to minimize the head loss, and can be installed in any position, flow up or flow down.
Axial Nozzle Check Valves are designed to have drip tight sealing in case of back flow. Moreover, the valve disc also guarantees complete closure.
Due to its spring mechanism, closure of the valve is obtained before back flow reaches the valve, thereby minimizing the surge conditions
As a result, DEMBLA Check Valve operates in a fast way and closes silently.
Check Valve body is design to minimize the head loss, and can be installed in any position, flow up or flow down.
Size & Rating
| PN10 | 50 NB |
| PN25 | 1000 NB |
Higher Ratings up to 1500# Available on Request
Features
- Maintenance Free.
- Spare & weight Savings.
- Low weight discs, short stroke lengths and spring assistance combine to ensure that the Axial type.
Optimised Disc Design
Ring Disc
The Ring Disc design in sizes 12” and above ensures that the disc remains light and responsive even in large sizes. Radial guide assembly or a shaft with a single, centrally mounted, spring the disc moves freely without any of the frictional forces associated with the solid disc and shaft design. With a flow path both around and through the centre of the disc the flow capacity of the valve is best in class. Due to the excellent pressure recovery properties of the diffuser, the minimal pressure drop across the valves gives lifetime energy savings when compared to more conventional check valve designs.
Centre Guided Ring Disc
For the design valve, we have focused on laying the centre of gravity of our only moving part, the disc, over the centre of the surface it is sliding on. Due to the design change we are able to use softer springs, which function at very low flow rates, mainly because we have eliminated the tilting effect of the moving component all together.
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