A piece of metal wire is added to the water tank of the toilet to control the valve in the water tank to be closed at any time, so that the water volume per flush is only 1/5 of the original. This is the secret of water-saving toilets discovered by Master Zheng from Beijing. A report from Beijing Entertainment News said that the toilet tank and toilet in Master Zheng's house are separate. Nowadays, there is a metal wire in the water tank made into an "elastic device". The metal wire is first tightly wrapped around the overflow pipe of the water tank, and then the two ends of the metal wire are placed on the leather valve of the water tank. When flushing, the leather valve lifts the metal wire. After loosening the wrench of the water tank, the elastic force of the metal wire bounces the leather valve back to the closed state. "When flushing, you only need to apply a little external force to the leather valve, and the leather valve will close." Master Zheng explained the water-saving principle of the toilet.
After measurement, after using the water-saving device, the water consumption for each flush can be controlled to about 1/5 of the total volume of the water tank, which is 2 liters of water. Assuming that a family of three flushes 10 times a day, if a 10-liter old-fashioned toilet is used, 100 liters of water are needed every day, and 3 tons of water are used a month; if Master Zheng's water-saving device is used, only 20 liters of water are used a day. , only 0.6 tons of water is used in a month, which can save 2.4 tons. And the cost of such a water-saving device is less than a dime.