Flow Controls – JFC Civils

Vortex Flow Control

All of our industry leading Vortex Flow Control solutions aid in throttling the flow rate of stormwater before it being discharged into your local storm drain or water course. They are custom fabricated to cater to the specific needs of each customer.

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HYDRO-VALVE

The Hydro-Valve is a vortex flow control device for throttling the flow rate of stormwater before discharge into a local storm drain or water course.

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.

Design:

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)
1200	1050
1350	1800
1500	2100
	2400

*Contact JFC for further information

**Requires concrete shuttered wall on the inside of the manhole chamber

Application:

It is used to control the flow of Stormwater from the attenuation tank preventing downstream flooding during periods of heavy rainfall.

Features & Benefits:

Typical Flow rate 1-50L/s*
Typical head heights: 450-3000mm*
WRc Certification
Customised Specification
No Moving Parts
Self-Activating
Self-Cleansing
Manual By Pass
Easy Installation
3-6 Times Greater Orifice CSA
Hydraulic Data Available

Installation:

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.

Quality Assurance:

JFC Hydro-Valves are manufactured to ISO 9001:2000 quality assurance system.

Operation:

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.

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HYDRO-VALVE SLIDER

The Hydro-Valve Slider is a vortex flow control device which adjusts the flow of Stormwater leaving the storage facility before entering the local storm drain or water course minimising potential flood risk.

It is available in a range of sizes with flow rates varying from 1 – 20 L/s* making it suitable for various specifications. The Hydro-Valve Slider has the added benefit of an innovative and unique sliding vortex chamber feature for ease of inspection and maintenance. Contact JFC for larger flow rates

Design:

The JFC Hydro-Valve Slider is manufactured to customer specifications and custom designed to achieve a specified design flow rate at a given head height. It fits into one of the following manhole types depending on the specification:

Curved Back	Flat Back**
800mm	1500mm
1050mm	1800mm
1200mm	2100mm
	2400mm

** Requires a concrete shuttered wall on the inside of the manhole chamber.

Features & Benefits:

Typical flow rate: 1-20 L/s*
Innovative and unique sliding vortex chamber allows for quick and easy operation from ground level should maintenance be required.
Lockable in open and closed positions.
Removes the need for a Pen-Stock
Design allows for direct unobstructed access to the downstream pipe
Typical head heights from 450 to 2500mm*
Bespoke design for a given specification. Pre-fabricated models also available.

* Please contact JFC for specific requirements

Quality Assurance:

Manufactured to ISO 9001:2008 quality assurance systems

Operation:

The Hydro-Valve Slider controls Stormwater flow by hydraulic effect. 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 which results in a considerable pressure drop between the inlet and outlet which restricts the flow to the allowable discharge. It therefore operates automatically with no moving parts and no external power source.

Inspection and Maintenance:

The Hydro-Valve slider is designed to allow direct unobstructed access to the downstream pipe.
The unique sliding vortex valve allows for quick and easy operation from ground level should maintenance be required.
Small vortex chambers can be completely removed from the manhole for inspection and maintenance.
The unit can be locked in both the open and closed position depending on the maintenance requirements.

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HYDRO-VALVE MINI

Having identified the need in the market for a more compact design flow control unit JFC are delighted to introduce the Hydro-Valve Mini.

This vortex flow control device controls the flow of stormwater leaving the storage facility before entering the local storm drain or water course minimising potential flood risk.

It is available in a range of sizes with flow rates varying from 1 to 5 L/s* making it suitable for various specifications.

Designed specifically to fit through a 600mm manhole its compact design is extremely easy to install or retrofit onto the manhole. It can also easily removed without the need of specialist tooling for cleaning or maintenance purposes.

JFC Hydro-Valve Mini fits into one of the following manhole types depending on specification:

Curved Back (mm)	Flat Back (mm)**
800	1500
1050	1800
1200	2100

**Requires a concrete shuttered wall on the inside of the manhole cover

Hydro-Valve Mini 1 (Typical flow rate l/s)*	Hydro-Valve Mini 2 (Typical flow rate l/s)*
1-3	1-5
Typical Head Heights (mm)*	Typical Head Heights (mm)*
400 – 3000	400 – 3000

*Contact JFC for further information

Features & Benefits:

Extremely easy to install or retrofit
Fast installation – suitable for curved or flat back manholes
Small compact design
Stainless steel sliding vortex plate
Greater access to downstream pipe
Vortex chamber can be removed

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HYDRO-PLATE

The Hydro-Plate is an orifice type flow control device for throttling the flow rate of stormwater before discharge into a local storm drain or water course.

It is used to control the flow 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 an oriface principle to control and attenuate stormwater flow without the need for moving parts or an external power source. They come in a variety of models to suit the application and customer specification.