AquaMotion, a U.S. manufacturer of hot water recirculation systems and cast iron and stainless steel pumps, was awarded another U.S. Patent, No. D834,145, for the Aqua-Flash Recirculation System on November 20, 2018. AquaMotion already owns the Utility Patent No. 9,863,647 for the product, which won the Most Innovative Plumbing Product of 2018 Award at AHR Expo 2018. 

The Aqua-Flash is an under-sink bypass valve for use with hot water tank recirculation systems. It does not require power under the sink. The pump installs on the water heater.