I. Manufacturing Standards:National Building Standard Design Collection 12S109

Section 2: Material Selection:The main body and major components are made of SUS304 stainless steel.

Section 3: Application Scope:High-rise residential buildings, hotels, office buildings, and any other facilities requiring increased water pressure and a constant flow water supply system.

IV. Product Introduction:Pressure-free Variable Frequency Water Supply Equipment can be configured in the following forms according to the city's pipeline network, annual water pressure, water shutdown conditions, and users' requirements for water quality and supply reliability:

1. No high-level water tank; direct supply with downward flow.

2. Features a high-positioned water tank and gravity supply system with water flowing from top to bottom; traditional water supply methods cannot be separated from reservoirs. The water in the reservoir is generally supplied by the public water supply network, which results in the pressurized water losing its pressure upon entering the reservoir, leading to significant energy waste. In response, our company's professional technical team has developed a complete water supply system that can be directly connected to the public water supply network without any adverse effects. This system can replace the reservoir, fully utilizing the pressure of the public water supply network for direct or indirect water supply, thus avoiding secondary energy waste and pollution, significantly reducing infrastructure investment and shortening construction time. The system consists of an intelligent variable-frequency control cabinet, a flow stabilizer tank, a pump unit, meters, valves, pipelines, a base, and more.

V. Product Advantages:

Energy-saving - No environmental pollution, more electricity-saving, over 30% more energy-efficient than general water supply equipment.

2. Stable and reliable, featuring renowned pump brands and Schneider electrical for low-voltage applications. Multiple pumps operate simultaneously, ensuring uninterrupted water supply even if one pump fails.

3. Smart control, fully automatic operation, no need for personnel management, cost-saving, hassle-free, with the core control utilizing ABB inverters and PLC control.

4. Versatile and compact, easy to install and maintain.

Section 6: Selection and Technical Description:

The selection of pressureless variable-frequency water supply equipment is determined based on data such as the user's water supply pipeline, pressure and flow rate, actual water usage, and the height of the building. The volume of the regulating valve used in the equipment is estimated to meet the water flow requirements. If the water pipeline is too narrow and the flow rate cannot satisfy the water usage needs, the volume of the regulator needs to be recalculated. The recommended formula is as follows:

Volume = (Q_out - Q_in) * Δt

Q_in = Maximum daily water peak period of tap water intake

Q_out = daily peak water usage by customers

t=Duration of Maximum Water Consumption Peak Period