Buy a cold water valve that matches the water inlet connector of the electric water heater in the plumbing fittings shop, turn off the main tap water valve, unscrew the hose connector, replace the newly bought valve with a new one, and check whether the connector is watertight.
The use method is to close the newly replaced valve when heating the water heater. Please rest assured that the water heater box is full of water at this time, and the water heater will never be burned dry. Open the valve every time the water heater is used, and close the valve when the water heater is not used at ordinary times. Ensure that the water pressure on the wall of the water heater is the lowest, so it is safe.
Scientific research strength of solar rain and solar energy
In terms of technological innovation and product research and development, Sunrain Group has established postdoctoral research centers in cooperation with scientific research institutes such as Peking University and Southeast University, and undertaken a number of national torch program projects: 2 national key new products, 4 national science and technology projects, 4 invention patents, 5 provincial science and technology projects, 8 core technologies, 9 innovative technologies, high-end research technologies 12 and design patents 12.
The all-glass vacuum tube production line of high-temperature thin film sputtering technology cooperated with Peking University has reached the international advanced level. Sunrain "High-efficiency high-temperature coil pressure-bearing solar water heater" has won the certificate of "National Key New Product" jointly issued by the Ministry of Science and Technology, the Ministry of Commerce, the General Administration of Quality Supervision, Inspection and Quarantine and the State Environmental Protection Administration.
In the field of product testing, after more than ten years of careful construction, Sunrain has established a leading indoor and outdoor testing center in the world, equipped with more than 40 laboratories, including "Artificial Sun" (20 12 German original cooperative solar indoor simulator), water heater and hot water system testing, medium temperature collector testing, heat pump performance testing, collector testing, heat pipe component testing, electrical component testing, raw material testing and so on.