Run: How much water users is constantly changing, so it occurs when the water supply is insufficient or excess supply situation. The imbalance between the supply of water and concentrated reflection on the water pressure, water that is more and less water, the pressure is low; less water and more water, the pressure. Maintain a constant water pressure, can maintain a balance between water supply and water, too much water that the water for a long time, the water supply came from less, thereby improving the quality of water supply. Water Supply System for certain industries or particular user is very important. For example, in some of the production process, if the water supply for any reason without water pressure is low or short, may affect product quality, the product scrap and severe damage to the equipment. Another example is when the fire broke out, if insufficient water pressure or water supply, can not rapid fire, may cause significant economic losses and casualties. Therefore, some of the water district constant pressure water supply system, with great economic and social significance. With the power of technology, inverter technology is improving daily, with frequency control as the core of intelligent water control system to replace the previous high water tank and pressure tank and other water equipment, a smooth start, starting current limit within the rated current, thus avoiding the impact on the grid at the start; the average pump speed is reduced, and thus extend the life of pumps and valves, and other things; you can eliminate water hammer effect starting and stopping. Its stable and secure operating performance, simple and convenient operation, as well as a full array of capabilities will enable to achieve water-saving, energy-saving, labor-saving, and ultimately achieve the purpose of high-efficiency operation. Technical parameters Ambient temperature: 1 ℃ -40 ℃ Relative humidity ≤90% (20 ℃), outdoor allowed 59%, with no dew condensation Power supply: 3-phase five-wire, 380V (± 10%), 50HZ (± 5% ) Flow Range: 0 ~ 600m3 / h Pressure range: 0 ~ 2.0MPa pressure regulation accuracy: ≤0.01 MPa Vibration: <0.5g, vibration frequency 10HZ-150HZ maximum vibration acceleration should not exceed 5m / s2 equipment operating locations should be no conductive or explosive dust, non-corrosive metal or destroy insulation of gas or steam