
- CPM Drainage
- CPM Rail
- CPM Special Precast
- CPM Environmental
- Stormwater Attenuation
- Stormwater control
- Stormwater treatment
- Domestic Rainwater Harvesting system
- Commercial Rainwater Harvesting system
- Domestic/Commercial Grey-water recycling system
- Sewer Cleansing
- Combined Sewer Overflows
- Pumping chambers
Hydro-Brake® Chambers
CPM Group in a joint venture with Hydro International plc have introduced a series of easy to install pre-formed Hydro-Brake® Chambers. The system incorporates in a reinforced concrete chamber with pre-formed benching and headwall with a pre-fitted Hydro-Brake®.
The Hydro-Brake® Flow Control is a device for controlling liquid flow. It is self-activating, relying upon upstream hydraulic head to generate an air filled vortex within the centre of the casting. The chamber has been designed to enable the contractor to install the Hydro-Brake® Chamber in a fraction of the time it takes using conventional methods.

Hydro-Brake® Chamber fitted to headwall
Chamber design table
Diameter |
Height |
Outlet range |
Max no. of inlets of max inlet diameter |
Max inlet |
Approx weight (kgs) |
1200 |
1250 |
150 to 300 |
4 |
300 |
2150 |
1500 |
1750 |
225 to 450 |
2 |
750 |
3970 |
The 1200/1500 Chamber is fabricated using a base unit kitemarked to BS EN 1917:2002
Applications
- Stormwater management
- Source control
- New developments
- Storage facilities
- Flow balancing
- Storm attenuation
- Land drainage
- Velocity control

Benching detail
Advantages
- Quick to install
- No concrete surround
- No moving parts
- No external power source
- Self-activating
- Minimal maintenance
- Outlet opening 3-6 times larger than conventional controls
- Reduce storage requirements by up to 30% compared to an orifice plate
- Configurable to any Flow Control situation
- Pre-fitted chamber for quick installation
- Chamber design allows multiple inlets
- Reduces capital costs on overall project

Hydro-Brake® Chamber
Overflow Chamber
This chamber includes an emergency overflow; the design incorporates a cored hole at the desired height and a reverse backdrop pipe arrangement.
This is an alternative design to a Weir Wall configuration and can be incorporated in either the 1200mm or 1500mm Chambers.








