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New Pressure-Assisted Toilet Is Quieter, Uses Even Less Water

6/2/2010 4:52:22 PM

Tags: conserving water, Niagara Conservation Corporation, Stealth toilet, saving water, pressure-assisted toilets

Stealth toiletTired of flushing money down the toilet on utility bills? Then this could be the answer.

The Niagara Conservation Corporation has introduced a new water-efficient toilet, the Stealth, which is similar to a pressure-assisted toilet in that it uses air to remove wastewater from the bowl when it is flushed. In a regular pressure-assisted toilet the air pushes water through the flush valve, but the Stealth toilet uses air to pull the contents of the bowl down to the trapway from below, using less water and slashing utility bills. It’s the first ever toilet to use “vacuum-assisted” technology. Alex Wilson, executive director of Environmental Building News, calls it a toilet “that’s unlike anything on the market.”

The Stealth toilet uses an air transfer system where air is siphoned up and down a thin chamber in the tank. As the tank refills, air is pushed down the chamber into the trapway, where it pressurizes the water inside and creates a larger water surface area in the bowl. When the toilet is flushed, the water emptying from the tank creates a vacuum that sucks the air back up the chamber, depressurizing the trapway and pulling the wastewater out through the bottom of the bowl. The toilet uses only 0.8 gallons of water per flush (gpf), which when compared to a standard 1.0-gpf pressure-assist toilet makes it the most water-saving toilet on the market. It uses half as much water as a “standard” 1.6-gpf water-efficient toilet.

It’s also one of the quieter toilets on the market. Pressure-assisted toilets have become popular for their water efficiency, but the air pressure coming from the top of the bowl makes a “whoosh” sound when it is flushed, which could surprise an unwary user. The vacuum-assisted mechanism, however, makes a quieter flushing sound, no louder than a regular gravity-flush toilet. In addition to this, the toilet has no expensive parts to replace, which also saves on repair costs.

To find out more about water-efficient toilets, see our article “Best Options for High-Efficiency Toilets.”

Do you have a water-saving toilet in your home? Write a comment and tell us about it.

Photo courtesy of the Niagara Conservation Corporation 



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