The constant pressure water supply PLC control system adopts PLC as the core control unit, and is equipped with pressure sensors, frequency converters, water pumps and other equipment to realize automatic constant pressure control of the water supply system. When the water consumption changes dynamically, the system can automatically adjust the rotating speed or start-stop quantity of water pumps to keep the water supply pressure stable. It is widely applied in residential communities, industrial production, urban water supply and drainage and other scenarios.

System Advantages
Energy-saving & High Efficiency: Compared with traditional power frequency water supply (flow controlled by valves), frequency converter speed regulation can achieve energy savings of 30%-50%, with particularly remarkable effects during low water consumption periods.
Stable Water Pressure: Real-time adjustment via closed-loop control eliminates water pressure fluctuations and improves water usage experience (e.g., preventing unstable hot water temperature of water heaters).
High Degree of Automation: The system operates automatically in the whole process and supports unattended operation. It can be monitored via HMI or remote platform to cut manual maintenance costs.
Comprehensive Protection Functions: Equipped with protections against overload, overvoltage, undervoltage, water shortage and water pump overheating to improve system reliability.
Strong Expandability: It can be flexibly connected to Building Management System (BMS) or smart city platform, and supports remote start/stop and parameter adjustment.
Application scenario
Residential Domestic Water Supply
For high‑rise residential buildings and apartment complexes, it addresses insufficient water pressure at high floors during peak water‑consumption periods.
 Industrial Production Water Supply
For factory production lines, cooling systems and boiler water make‑up, stable water pressure is required to ensure process precision.
Municipal Engineering
For municipal pipe networks, urban water supply and municipal sprinkler irrigation, it guarantees reliable transportation of urban public water.
Urban Waterworks & Fire‑fighting Water Supply
For secondary pressure boosting of urban waterworks and fire‑fighting water supply systems, it switches to high‑pressure mode upon fire alarm.
Agricultural Irrigation
For large-area farmland drip and sprinkler irrigation systems, it automatically adjusts pump power according to water consumption.