Water supply equipment plays a crucial role in addressing daily water pressure issues. Many high-rise residential complexes, schools, factories, hotels, inns, and rural areas require secondary water supply systems. The choice of water supply equipment varies according to customer needs, and each manufacturer may have different classification standards for these systems.

I believe many of you are familiar with secondary water supply! The tap water we use in our daily lives is transported to our homes through pipes. The water transported through pipes is generally under pressure. When tap water leaves the waterworks, it is pressurized to 0.38 MPa, which can lift the water to a height of 38 meters. Therefore, for floors below this height, theoretically, the water from the waterworks can flow directly into residential homes through the pipes.

But some terrains are different, and as the distance the tap water travels through the pipes increases, the resistance also grows, and the achievable height is correspondingly reduced. Therefore, this 38-meter height line is not parallel to the ground. However, some buildings have floors that are too high, which can lead to insufficient water pressure, preventing the water from flowing upwards. As a result, many high-rise buildings need to activate a secondary water supply system. From which floor does the secondary water supply for high-rise buildings begin?

Utilize the existing pressure in the potable water pipes, adding only what is needed, and the equipment stops working once the water meets the required quality. Efficiency can reach 50%-, for instance, in a residential complex with a building height of 6 stories, during peak water usage, the water can supply up to the 4th floor, while during off-peak usage, it can reach the 6th floor. The variable-frequency constant-pressure water supply equipment boosts pressure to the 5-6th floors during peak usage and enters sleep mode during off-peak periods. In case of a power outage, the water supply returns to normal pressure. The equipment consumes less energy, has low operational costs, is cost-effective, and saves daily electricity expenses.