The wonderful Niagara stealth toilet from the Niagara uses vacuum technology and is highly efficient. It flushes only 0.8 gallon of water per flush saving upto 20,000 gallons of water annually . It is not noisy and operates quietly.
It is a beautiful blend of clever engineering and functionality. It works on the following principle- the air at the top is pushed down to the bowl through a trap way creating a large air bubble between the water in the bowl and that in the sanitary trap near the toilet base. The air bubble exerts pressure on the water in the trap way which in turn leads to rise in the level of water in the bowl creating a larger water spot. The vacuum assist stealth toilet pulls down the contents down the toilet bowl to the drainage saving water.
