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ACO Qbrake Vortex

ACO Q-Brake Vortex is a horizontal vortex flow control designed to prevent downstream flooding by controlling the release of stormwater before it discharges into the watercourse or sewer.

Designed to regulated stormwater flows from 1-100 litres per second, ACO Q-Brake Vortex is tailored to the specific performance requirements of the application providing optimum efficiency within the drainage system. image

Unlike more conventional methods, ACO Q-Brake Vortex provides superior hydraulic performance. It allows more flow at lower heads, reducing the need for on-site storage volume requirements and lowering installation costs.


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ACO Q-brake Vortex

2.7 MB

The self-activating system has large clear openings making it less prone to blockage. The absence of any loose parts also reduces maintenance requirements. Remote access to drain the system is provided by the patented bypass door and emergency drain down.

ACO Q-Brake Vortex can be used in conjunction with ACO’s award winning attenuation and infiltration system, ACO StormBrixx, to provide a fully integrated drainage scheme for a wide range of applications. Where a discharge restriction is in place, ACO Q-Brake Vortex regulates surface water flows and satisfies planning and connection requirements set out in the Floods and Water Management Act.

Manufactured from grade 304 stainless steel, each ACO Q-Brake Vortex is individually configured to suit specific performance criteria and the profile of the chamber.

Orifice plates available for where flow controls are not suitable or for flows greater than 100l/s


  • Regulates stormwater flows from 1-100 l/s litres per second
  • Individually configured
  • Self-activating system
  • Larger clear opening, reduces risk of blockages
  • Remote access for emergency drain down
  • Remote access bypass door
  • Inlet/outlet determined by laboratory verified curves
  • Flexible fitting options to suit profile of manhole chamber


  • Addresses planning and connection requirement of Floods and Water Management Act
  • Tailored performance provides optimum hydraulic efficiency
  • Reduces the need for on-site storage lowering installation costs
  • Simplifies access and maintenance
  • Removes the need for direct man access to sewer manholes
  • Proven performance and reliability
  • Approved by Severn Trent, Anglian and Scottish Water
  • Simple to install

Recommended applications

  • Public landscaping
  • Car parking
  • HGV parking
  • Petrol station forecourts
  • Light industrial
  • Heavy industrial
  • Distribution yards
  • Airports (airside)
  • Port and dock sides
  • Security areas
  • SuDs

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