Non-negative pressure water supply unit, also known as superimposed water supply device, is mainly used for the secondary pressure of urban pipe networks and high-rise buildings.

The advantages:

Energy saving - superimposes the pressure of the original pipe network
Health - Water does not stay in the non-negative pressure tank will not deteriorate
Small size - one tenth of the footprint of traditional water supply
Automatic - the use of frequency conversion, timing, quantitative control can achieve unattended

Equipment working principle
(1) Frequency conversion constant pressure water supply: When the water supply of the municipal pipe network is greater than the water consumption of users, the constant flow tank type non-negative pressure water supply equipment frequency conversion constant pressure water supply, at this time, a certain amount of pressurized water is stored in the steady flow tank.
(2) Eliminate negative pressure: When the user's water consumption increases, the pressure at the connection between the municipal pipe network and the stabilizing tank will drop. The valve opens and atmospheric air enters the surge tank. At this time, the steady flow tank is equivalent to an open water tank with a free liquid surface, the pressure is the same as the atmosphere, and the negative pressure is eliminated. When the water level drops to the set value, the liquid level controller transmits the control signal to the control system in the frequency conversion control cabinet to control the pressurization unit to stop working, and the user stops the water; when the user's water consumption decreases, the water level in the steady flow tank rises, The gas is discharged from the exhaust valve of the vacuum suppressor. After the pressure returns to normal, the pressurization unit restarts automatically to restore the water supply.
(3) Water stop function: When the municipal pipe network stops water, the pressurization unit will automatically stop running under the control of the liquid level controller. After the municipal pipe network water supply is restored, it will automatically start and resume normal water supply.
(4) Small flow sleep function: when the user does not use water or the water consumption is very small, the device automatically enters the sleep state (shutdown) and maintains the water supply pressure. When the user resumes water use, the system automatically wakes up and restores normal water supply.
(5) Continuous water supply in case of power outage: When the community has a power outage, the municipal pipe network will continue to use water supply to the low area, and the power outage will not stop the water supply. After the power supply of the equipment is restored, it will automatically start and resume normal water supply.

Installation Notes
1. The equipment should be installed on a foundation with a strength not lower than C20 and drainage facilities and maintenance channels should be left around;
2. The installation location of the equipment should be selected in a relatively dry environment, avoiding the open air environment, so as to avoid damage to electrical components;
3. Before installation, carefully check whether there are hard objects in the pump body, so as not to damage the impeller and pump body during operation;
4. The pipeline is not allowed to be added to the pump during installation, so as not to deform the pump and affect the normal operation;
5. Connect in sequence according to the installation drawings, the joints are sealed, and no forced installation is allowed. When the main pipe has a large diameter, it needs to be supported to avoid stress;
6. Tighten the anchor bolts so as not to affect the performance of the pump due to vibration during startup;
7. Install a regulating valve on the inlet and outlet pipelines of the pump, and install a pressure gauge near the pump outlet to control the pump to operate within the rated working condition and ensure the normal use of the pump;
8. The test pressure of the piping system is 1.5 times the rated pressure and kept for more than 5 minutes. During the pressure test, the piping system must not have any cracks, dripping, leaking or seepage;
9. If the discharge pipeline is equipped with a check valve, it should be installed outside the gate valve;
10. The installation method of the pump is divided into rigid connection installation and flexible connection installation.

Product range

Building pressurization, urban water supply, water plant pressurization, medicine and food

Customized and reliable:

According to the actual situation of each pumping station and local conditions, we provide users with targeted and systematic pumping station solutions to ensure water supply, reduce investment and operating costs, and facilitate maintenance.