These are tank style systems that use a semi-flush of water in a more conventionally designed toilet pedestal which is piped to a remote composting chamber..
The tank system may be a variety of styles of design.
CLIVUS MULTRUM FOAM FLUSH TOILET
Manufacturer – CLIVUS MULTRUM INCORPORATED
Country – USA
System webpage – www.clivusmultrum.com/products-services.php#Foam-flush
System Type – Semi-flush – Tank
Summary – The Clivus foam flush toilet combines a flush toilet with the composting system. This allows the chamber to be located remotely from the pedestal and also allows a conventional style toilet to be used.
The composting chamber is the inclined base system Clivus uses for its drop toilet and it is suited to household and amenities use.
ENVIRO AQUATUTI COMPOSTING TOILET
Manufacturer – NZ ENVIRO COMPOSTING TOILET SYSTEMS
Country – NEW ZEALAND
System webpage – www.envirocompostingtoilets.co.nz/aquatuti-enviro-composting-toilet/
System Type – Semi-flush – Tank
ENVIROLET FLUSHSMART VF
Manufacturer – SANCOR INDUSTRIES
Country – USA
System webpage – www.envirolet.com/vf.html
System Type – Semi-flush – Tank
ENVIROLET LOW WATER REMOTE
Manufacturer – SANCOR INDUSTRIES
Country – USA
System webpage – www.envirolet.com/enlowwatrems6.html
System Type – Semi-flush – Tank
SUN-MAR CENTREX LOW FLUSH
Manufacturer – SUN-MAR CORP
Country – CANADA
System webpage – www.sun-mar.com/prod_flush.html
System Type – Semi-flush – Tank
Summary – The Centrix, low flush systems are a range of 6 models that use a 1 pint flush toilet pedestal and pipe the contents into a remote composting chamber that is below the system, but does not have to be directly below it, allowing much greater installation flexibility.
There are 3 size systems; the Centrex 1000, Centrex 2000 and Centrex 3000 with the smallest being suitable for light cottage use, and the largest for heavy cottage use or medium house use. There is electric and non electric (NE) models in each size.
The electric versions have a heater under the pile and a fan to assist venting.
The toilet pedestal is similar to standard toilets, although with a smaller flush. The system does not separate the urine.
With a long history of use, these systems are great where the more traditional flush system is preferred.