When the pressure reaches the design pressure of constant pressure water equipment principle, by the pressure controller makes up pump is turned off. When the thermal expansion of water within the system so that the system pressure rises above the design pressure, excess water to fill the tank through the safety valve discharge cycle use, when water in the system since the leak or the temperature drops and the volume shrink device size constant pressure water system When the pressure drops, capsules water is continuously pressed into the pressure drop in the pipe network constant pressure water replenishment system means constant pressure water device acts as the system pressure to a minimum design pressure of time allowed by the pressure controller makes up the water pump to restart pipelines and water pressure tank, again and again. Such water chamber volume shrinking, shrinking capsule-shaped diaphragm, indoor water when the water is almost exhausted, the tank pressure also dropped the design pressure P1, then the pressure switch is designed to meet the minimum pressure contact, the pump will automatically open, so Water has filled pipelines and water room. Repeat the above process to ensure water supply system with water. The above operation is initiated by the pressure switch via the electrical control box and pump start and stop it can be realized. Constant pressure water equipment principle, Wuhan Han Wei Li Yuen, Shennongjia constant pressure water equipment provided by the well-being of Equipment Co., Ltd. Wuhan Han Wei Li Yuen. Wuhan Han Wei Li Yuen-being of Equipment Co., Ltd. (www.whhwly.com) is a leader in Wuhan, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. In Wuhan Han Wei Li Yuen leadership with the staff warmly welcome all inquiries negotiations to create Wuhan Han Wei Li Yuen better future.