To avoid flooding and over-running the drainage and sewer systems during peak times, the FRÄNKISCHE stormwater management systems take into consideration the best way to manage flow control of stormwater discharge.
When emptying storage facilities or storm sewers, the discharge rate is meant to be relatively low. A good way of controlling this discharge is with the use of a vortex valve on the discharge side to assist with flow control.
The vortex valve shafts developed by FRÄNKISCHE together with UFT are flow limiters designed to aid flow control by defining the discharge rate from overflow tanks, storage tanks and stormwater pipework systems to a precalculated and defined maximum discharge capacity.
Where sufficient space for storage cannot be created in existing paved areas or where infiltration is not possible, the local discharge requirements stipulate how much water can and may be discharged from the area. For new projects, sufficient storage (with or without infiltration) must always be assured.
Fränkische Flow Control Devices
Further to our OSD tanks, we also provide a shaft flow control device called RigoLimit V.
The system can handle both, low flows and high flows.
The RigoLimit V flow control device is the first plastic throttle shaft system that generates the proven vortex flow directly within the shaft base where the shaft and throttle form one complete unit. As the system is made in a corrosion-free design it is one of the most reliable and maintenance-free flow control devices on the market.
This state-of-the-art robust technology allows designers to easily manage site discharge flow rate restrictions when modelling post-construction impervious coefficient runoff through WSUD principles or other site challenges. RigoLimit V achieves uninterrupted operations with total flexibility and the discharge rate can be adjusted at any time.
The throttle shaft is manufactured to the project needs and delivered ready-to-connect. It can easily be integrated into the drainage system on site.