In Southeast Asian cities dotted with high-rises, Middle Eastern industrial parks, and European communities pursuing direct drinking water standards, a non-negative pressure water purification equipment is redefining building water supply — the Hongke series of Non-negative Pressure Water Purification Equipment. With three core advantages: zero negative pressure loss, large-flow filtration, and intelligent pressure stabilization, it has become the trusted choice for over 200 projects worldwide.
Technological Innovation: Safeguarding Water Quality from the Source
Non-negative pressure water supply equipment is an energy-efficient water supply system. Its core working principle is to utilize the residual pressure of the municipal water pipeline network. The equipment is directly connected to the municipal water pipeline through the water inlet pipe, and water enters the equipment driven by the residual pressure of the municipal pipeline. The booster pump further pressurizes the water on this basis, raising the water supply pressure to the level required by users and continuously supplying water to the outlet pipeline network.
Below is a detailed analysis of the working principle of non-negative pressure water supply equipment:
Water from the municipal water pipeline network enters the steady-flow tank, where the air inside is discharged through the vacuum eliminator. Once the tank is fully filled with water, the vacuum eliminator closes automatically.
When the pressure of the municipal water pipeline network meets the water demand, the non-negative pressure water supply system supplies water directly to the water supply network through the check valve. When the pressure of the municipal water pipeline network fails to meet the water demand, the pressure signal of the system is fed back to the frequency converter by the remote pressure gauge, the water pump operates, and automatically adjusts its speed according to the water consumption to maintain constant pressure supply. If the operating pump reaches the power frequency speed, another pump is started for variable frequency operation.
During pump operation, if the water volume of the municipal water pipeline network is greater than the pump flow rate, the non-negative pressure water supply system maintains normal water supply. During peak water usage periods, if the water volume of the municipal water pipeline network is less than the flow rate of the small pump, the water in the steady-flow tank serves as a supplementary water source to ensure normal supply. At this time, air enters the steady-flow tank through the vacuum eliminator, breaking the vacuum inside the tank and preventing negative pressure in the municipal water pipeline network. After the peak water usage period, the system returns to normal operation.
When the municipal water pipeline network stops supplying water, causing the liquid level in the steady-flow tank to drop continuously, the liquid level detector feeds a signal to the frequency converter, and the water pump shuts down automatically to protect the pump unit. During nighttime low-flow water supply when the pressure of the municipal water pipeline network is insufficient, the pressure stabilization tank can store and release energy, avoiding frequent startup of the system's water pumps.
By re-pressurizing on the basis of the municipal pipeline network's pressure, the non-negative pressure water supply equipment achieves energy-efficient and high-efficiency water supply. It also avoids secondary pollution of the municipal water source and prevents the extraction of municipal water due to insufficient water pressure.
Scenario Adaptation: Customized Solutions for Multiple Industries
| Application Scenario | Solution Highlights | Case Verification |
|---|---|---|
| High-rise Building Water Supply | Intelligent zoning and pressure division; direct supply for low zones + pressurization for high zones; head up to 259 meters | 28-story apartment in Jakarta, Indonesia; water pressure stability ±0.02MPa |
| Industrial Circulating Water | Temperature resistance: -10℃~120℃; compatible with acid-alkali media (CDLF series) | Thai chemical industrial park; 3 years of corrosion-free operation |
| Rural Centralized Water Supply | Modular design; integrated filtration + pressure stabilization in a single tank; floor area ＜2㎡ | Ethiopian village; direct drinking water quality up to standard for 2,000 people |
| Commercial Complexes | Mute design (＜55dB); support for multi-language touch panel | Dubai hotel; 24-hour constant pressure supply with zero complaints |
Global Services: A Quality Commitment from Weifang to the World
Rapid Delivery: The Weifang Binhai Intelligent Factory boasts an annual output of 5,000 units, supports multiple trade terms such as DAP/DDP
Localized Operation & Maintenance: We have established spare parts centers in Vietnam, Peru, and Ethiopia, providing "1-hour response + 48-hour on-site" services with a parts commonality rate of 90%.
Certification Assurance: Certified by multiple authorities including CE, UL, and TUV, compliant with the EU's Drinking Water Directive (98/83/EC). We serve over 300 projects in 55 countries worldwide, including landmark projects such as the Saudi National Stadium and Vietnam Hai Duong Power Plant.
Why Choose Hongke Non-negative Pressure Water Supply Equipment?
30%-95% Energy Saving: Utilizing the existing pressure of the pipeline network, it saves over 100,000 kWh of electricity annually compared to traditional equipment (calculated based on a 100m³/h project).
40% Cost Reduction: No need to build water storage tanks, saving civil engineering costs; maintenance expenses are only 1/3 of those of traditional equipment.
Ready for Use Immediately: Standardized interface design; on-site installation only requires connecting inlet and outlet pipes, with commissioning completed within 2 hours. Supports remote APP monitoring (compatible with 12 languages including English and Spanish).
From the tropical rainforests of Southeast Asia to the desert new cities of the Middle East, Hongke Non-negative Pressure Water Purification Equipment, with "zero negative pressure loss, full-process sealing, and intelligent management", turns every drop of tap water into safe, stable "direct supply water". We do not only provide equipment, but also deliver a set of "efficient, environmentally friendly and sustainable" water usage mode — this is why global customers choose Hongke.
Shandong Hongke Hydropower Equipment Co., Ltd.
Weifang Binhai Economic and Technological Development Zone · Global Service Hotline: +62 852-8549-5374
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