What do flow controls do?

Flow control systems are fitted with a flow control device to regulate the forward flow of storm water within a drainage system preventing downstream flooding during periods of heavy rainfall.

By ascertaining the following design information a solution can be created:

• Head – Depth from invert level of outlet to the top water level upstream
• Flow – Required discharge
• Type of application – for example foul, combined or stormwater
• Any details of the proposed application, manhole details or control chamber proposals

How do they work?

Valves control fluid flow by hydraulic effect without requiring moving parts. At low flow rates, the valve allows water to enter through the inlet passing to the outlet unrestricted. However, at high flow rates water enters through the inlet with enough energy to create a vortex in the chamber. This vortex controls flow to the specified discharge rate.