Open the water heater in the bath, the first water in the pipe to let go of some cold water, both waste and inconvenient. 10 learned from Wuhan Association for Science and Technology, Wuhan, a high school students invented water-saving valve, water heater can make a drop of cold water. The inventor of water-saving valve is the sixth high school girl Wuhan Fang Xiao ?. In an interview, she said that ordinary water heaters in the outlet pipe, stored some cold water, when used to let go. She invented the water valve, installed in the water heater and pipe connections. Next to the water valve is a two-way rotating motor. Click the red switch, the motor rotates to open the water valve, hot water flows along the pipe. Click the green switch, the motor again briefly rotating, so that water-saving valve closed, stop hot water release, hot water pipes quickly all finished. Fang Xiao? Zhu Hong teacher introduction, the installation of the valve cost is lower, with a strong promotional value.
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