BMS Drainmax Tunnels are high-quality storm water attenuation and infiltration system. It is lightweight and extremely easy/quick to install with maintenance free systems available. The semi-circular tunnels have a 100% buffering capacity and three times the storage volume of a conventional gravel ditch. Drainmax Tunnels are fully certified. Maintenance Free Drainmax solutions are available.

The BMS Stormbreaker Defender is a low footprint interceptor (separator) capable of removing silt, particles and floating pollutants such as oil/hydrocarbons/debris and contaminated settling solids from surface or storm water flows. It can also be used before drain discharges direct in water courses to prevent pollution from silt and floating debris such as plastic bottles, bags, rags, cigarette butts etc.

The BMS Stormbrake Outlet Flow Control is a vortex flow control device that is placed at the outlet of attenuation, infiltrations, SuDS and water storage systems to limit or brake the outflow to a set rate. All BMS Stormbrakes are custom manufactured in acid resistant steel for flow rates from 0.5 l/s to 400 l/s and have easy maintenance.