Water Supply for Commercial Buildings

Project Overview

The secondary water supply system provides sufficient domestic water pressure to middle and high-rise residents by pressurizing tap water twice, ensuring stable water supply.

Advantages of the Project

Precise pressure regulation

The VFD monitors the pressure changes in the pipeline network in real time, dynamically adjusts the speed of the water pump, ensures stable and sufficient water pressure for middle and high-rise users, and avoids the problem of uneven pressure between low and high-rise buildings.
Efficient and energy-saving operation

Automatically adjust the power of the water pump according to the actual water consumption, avoiding energy waste caused by the traditional power frequency water supply of "full speed operation+valve throttling", and achieving energy-saving effects.
Extend equipment lifespan

By using soft start, smooth speed regulation, and reducing frequent start stop, the mechanical wear and electrical impact of the water pump are effectively reduced, and the service life of the water pump, motor, and pipeline system is extended.
Intelligent redundancy guarantee

Support multi pump linkage control, automatically switch or parallel operate standby pumps during peak water usage, ensuring high reliability of the water supply system and avoiding the risk of water interruption caused by single pump failure.

Case Study

Application of PDH30 in Building Secondary Water Supply Systems

The SAJ PDH30 inverter is designed for secondary water supply systems in high-rise buildings, enabling multi-unit intelligent speed regulation and constant-pressure supply. Equipped with remote monitoring, energy efficiency optimization, and fault protection, it extends equipment lifespan, reduces power consumption, and enhances automated management capabilities.
Application of PDG10 series VFD in hot water engineering

The SAJ PDG10 series VFD is applied in hot water projects such as hotels and schools, providing stable control of intelligent constant pressure water supply and temperature control return systems. It is efficient, energy-saving, and easy to operate, making it the preferred solution for hot and cold water projects.