EVDS are the sole UK agent for Evac Vacuum Systems, which were first introduced more than 40 years ago in building applications. Evac's vacuum technology has proven to be a winning combination of reliability and durability. The Evac solution minimises the use of fresh water for toilet flushes. At the same time it offers you ultimate freedom of piping design. Additionally, the reuse of grey water contributes to a small water footprint at your building.