It is available in a range of sizes with varying flow rates to suit all specifications. It is used to control the flow of stormwater from the attenuation tank preventing downstream flooding during periods of heavy rainfall. Manufactured to customer specifications in order to achieve a specified flow rate at a given head height. This self-activating device uses vortex principles to control and attenuate stormwater flow without the need for moving parts or the need for an external power source.
It is available in a range of sizes with varying flow rates (1 – 50 L/s*) to suit many specifications. *Contact JFC for larger flow rates.
JFC Hydro-Valves are manufactured to customer specifications and are custom designed to achieve a specified flow rate at a given head height. It fits into one of the following manhole types depending on the specification
|Curved Back (mm)||Flat Back** (mm)|
*Only available on larger units
**Requires a concrete shuttered wall on the inside of the manhole chamber
It is used to control the flow of Stormwater from the attenuation tank preventing downstream flooding during periods of heavy rainfall.
This unique patented design allows for quick and easy installation to various types of manholes (see above). The Hydro-Valve is fixed with steel stud anchors to the inside wall of the manhole. A manual by-pass is also incorporated in the valve for remote operation in the unlikely event of a blockage.
JFC Hydro-Valves are manufactured to ISO 9001:2000 quality assurance system.
The JFC Hydro-Valve produces a hydraulic effect to control the flow of stormwater. At low flow rates, water enters through the inlet and passes through the vortex chamber to the outlet without restriction. As the flow rate increases water enters through the inlet with sufficient energy to create a vortex in the chamber. This creates a considerable pressure drop between the inlet and outlet restricting the flow to an allowable discharge. The Hydro-Valve operates automatically with no moving parts or the need for an external power source.
Click here ask us a question, or request a call back to discuss your requirements today!