The non negative pressure water supply equipment is the technology of using the residual pressure of the pipe network to carry out the secondary overpressure water supply equipment, so this has a great reason with the pressure of the original municipal pipe network. But not all places that need secondary water supply and pressurization can use non negative pressure water supply equipment, which requires some necessary installation conditions.

1. The water supply pipe network without negative pressure water supply equipment can supply water normally and stop water infrequently, so that the water supply pressure of the pipe network will not fluctuate too much, the total water supply amount of the pipe network can meet the water demand and the users in the surrounding areas will not be seriously affected after using the negative pressure water supply equipment.

2. The normal use of water for non negative pressure water supply equipment mainly refers to the factories and research units that manufacture, process and store hazardous chemicals such as toxic substances and drugs in case of backflow pollution, which will not cause serious consequences, i.e. no toxic pollution or harmful pollution. In addition, users who have high requirements for water supply assurance rate and are not allowed to stop using water, as well as users who have concentrated water use time in the past, excessive instantaneous water consumption and no effective technical measures, also belong to the category of abnormal water use. Therefore, when boosting the water supply equipment without negative pressure, it is necessary to carefully inspect whether the local pipe network meets the conditions. In addition, it is necessary to obtain the consent of the relevant local water department, and whether the equipment can be installed after they have considered the overall situation of the pipe network.