Vacuum interface units are used when gravity based appliances such as wash basins, sinks and urinals are connected to a vacuum sewage system.  Vacuum interface valves are available in different standard or custom build versions with volumes from 2 up to 30 litres. The tank of the 2 litre unit is made of polypropylene where the tanks of the larger models are made of corrosion resistant steel AISI 316.
All vacuum interface valves make use of the proven Evac pneumatic flush mechanism with flush memory and vacuum sensor technology. No electricity is needed.
A special version for connecting a gravity toilet to a vacuum system is also available.

Vacuum sewerage system Vacuüm waterzuivering vacuumriolering infiltratie toilet system marine afvalwater zuiveren Qua Vac
Quavac qua-vac vaccuum toilet systeem system sewer riolering persriool