When the pressure reaches the design pressure, through 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 drop in temperature volume is reduced, the system pressure is reduced when constant pressure replenishment device, the capsule being constantly pushed the water pipe network pressure drop complement system, when the system pressure to a minimum design pressure of the pump allows constant pressure water device, through the pressure controller makes up the water pump to restart the pipeline and pressure tank in the water, again and again. Common telescoping floor-expansion tank volume expansion by contraction of the capsule to achieve, the tank can effectively utilize the total volume of the tank volume is only 20% to 30% constant pressure water device profiles, the tank is relatively large, but HGPZJZ STEADY Pressure expansion unit using special techniques and measures, part of the expansion portion and pressure regulator set separately Wanted constant pressure water system that allows most of the expansion of the amount stored in the isolated system expander, the volume of equipment utilization up to 90% or more, so the whole volume, height greatly reduced, saving 50% to 60% of the land. Easy equipment layout, installation, but also saves the cost of civil room. Constant pressure water equipment _ Wuhan Han Wei Li Yuen (certified) _ Jianghan constant pressure water device provides heating and cooling equipment by the Wuhan Han Wei Li Yuen Limited. 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.