The Airvac 3" Interface Valve in the Collection chamber.
Liquid transferring up-hill in a series of 'Saw-tooth' lifts.
Vacuum collection station.
THE AIRVAC VACUUM SYSTEM
Our System comprises
three key elements:
The interface valve chamber.
The collection vacuum sewers.
The vacuum station.
Effluent is collected from the household in a conventional manhole via gravity lateral pipework. The Airvac Vacuum Interface Valve either within the chamber or in a separate valve chamber senses a rise in water level and automatically opens. The vacuum stored within the sewer pulls a mixture of air and effluent into the sewerage mains which then travels at high speed through the system to the storage vessel within the collection station. No electrical power is required to operate the Airvac valve.
The vacuum sewerage main is laid in a saw-tooth profile (see diagram) which allows vacuum and liquid transfer at shallow depths in small bore pipework. This profile also allows the transfer of sewage up hill quickly overcoming underground obstacles or lifting effluent against a falling gradient.
Once the effluent arrives at the vacuum station it is stored within the collection vessel and transferred to the nearest treatment works via a conventional pumping main.
