The invention patent of this application is named dsra20 water safety device and water recovery device of R-160 reference water meter (volume measurement). These are plastic, stolen by unscrupulous people and used for frequent fraud. They use these people's manipulation. The dsra20 safety and water recovery device of the R-160 reference meter is designed to prevent such manipulation and theft, because its design completely covers the R-160 meter. Water (meter-160)So his design makes him unique in the class Milenium ingenieria amp and the S.A.S. project have proposed the same category of design.These devices change the design of every water meter on the market and are protected by the devices. In every modification of the device, a model can be made for the whole series of each water meter, so as to produce a prototype that can adapt to the R-160 reference quantity. 2. The dsra20 water safety and recovery device is designed for all urban domestic, commercial and industrial water supply and sewage service companies, with the purpose of protecting their measuring instruments at the national and international levels to prevent manipulation, theft and fraud；This is also to prevent water loss, thus reducing the impact on the environment. The first part of the device covers each side with a length of 15 cm, so as to protect the water flow coupling on the walkie talkie. One hole on each side of the first and second blocksIn this way, the interphone of the measuring instrument can be connected to a main water network It will also have an external drive guide at the top for docking new accessories for safety devices. The two hinged parts on each side of the device have a vertical sealing device, which is fully suitable for the measuring instrument when docking with the device； then, two safety screws fix each hinge, and the screw inlet will be blocked to avoid the accumulation of residues affecting the screw. On one of the hinges there is a bolt whose main function is to ac
