Vacuum-Assisted Low-Flow Toilet | Journal of Light Construction

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Despite using only 0.8 gallon of water per flush, Niagara’s Stealth Phantom Toilet does not sacrifice performance, the firm says. The key is the toilet’s patented air transfer tube (employed on Niagara’s entire line of WaterSense-labeled Stealth single-flush toilets), which reportedly allows for a vacuum-assisted pull during the flush that accelerates the force of the water and waste flowing through the trapway. Other features include an “EZ Height” design for ease of use and accessibility, and skirted sides. The toilet comes in white and retails for $290.


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