Tap water. Piping pressure in HVAC systems
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:) What is the typical pipeline pressure for tap water? Will the pressure before the pressure regulator vary significantly? If so, could the variation exceed 1 Kg in pressure? What is an appropriate range for the pressure in the pipes supplying tap water? I would appreciate everyone’s advice. Additional info: In HVAC systems, a pipe water pressure of 8 Kg has been encountered. This post was last edited by ybbhiu on 2009-4-17 at 15:11
I’m not quite sure what you mean, but I can tell you that the pressure in the water supply pipes depends on the water supply network in your city； The pressure in general pipeline networks is not very high, usually around 0.1 to 0.3 MPa.
:Lol, a pipeline pressure of 0.1~0.3 MPa is at the end of the system; in some pipelines, the pressure decreases from high to low just like in electrical systems. I want to redesign the pressure reducers used in the company – the inlet pressure of the original pressure reducers has no effect on the outlet pressure, but they are quite large in size； I want to reduce its size, that is, to change its structure. The inlet pressure has a slight effect on the outlet pressure; I’d like to know whether this slight effect falls within acceptable limits in a water supply system. If the inlet pressure increases by 1 Kg, the outlet pressure decreases by 0.15 Kg; if the inlet pressure decreases by 1 Kg, the outlet pressure increases by 0.15 Kg. This is the theoretical value
What is the approximate water pressure range in China’s water systems, and what is the allowable range of pressure variations within the same pipeline?
The pressure in heating pipes is designed in such a way that it is generally determined based on the height of the floor; at least 2-3 meters of water column is required at the highest point of the water level (for example, by using an expansion tank on the roof). In buildings taller than 50 meters, the area is divided into upper and lower sections in order to set different pressures, thereby saving costs.
Ask about the water supply elevation at the water plant.............
Check the elevation, as well as the pump head, etc.