Non-negative pressure water supply equipment

#1 von yanyan , 25.03.2019 08:22

1. The domestic water supply system adopts the non-negative pressure water supply mode. Only with the consent of the local water supply department can the non-negative pressure water supply equipment be installed.

2. When water supply is scheduled, the total flow of water supply can not reach the flow of water supply; and when the pressure of water supply network is relatively low, and the pressure fluctuation is large, the diameter of water supply pipe is relatively small, and where the water unit considers it impossible to install non-negative pressure water supply equipment, no non-negative pressure water supply shall be adopted.

3. For poisonous materials, pharmaceuticals and other hazardous chemical materials, and users who are not allowed to stop water can not install non-negative pressure water supply equipment.

4. If the water use is concentrated, the water consumption is large at the same time point or the water supply guarantee rate is high, when using non-negative pressure water supply equipment, the selection of flow stabilizing tank should consider the amount of water that can meet the peak water consumption.

5. If installing and using non-negative pressure water supply equipment is within the jurisdiction of municipal water supply, the large design water allowed by non-negative pressure water supply equipment should be determined by municipal water supply department. If it is within the scope of self-contained water supply, the above parameters should be determined by the designer after technical and economic comparison.

6. The diameter of the intake pipe of the non-negative pressure water supply equipment must be at least two or more steps smaller than that of the non-negative pressure water supply equipment.

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yanyan  
yanyan
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