I don't understand: did you screw the gauge on with the valve off, then open the valve and then close it again?bbrady said:
Yeah that doesn't make sense if all is as it should be.bbrady said:
I agree, the houses I've had showed more like 35 to 45 psig at the hose bibs.russ_watters said:
The pressure changes with altitude because as you go higher in the Earth's atmosphere, there is less air above you pressing down. This means that there are fewer air molecules in a given volume, leading to a decrease in pressure.
Temperature and pressure are directly related. As temperature increases, the molecules in a substance have more energy and move faster, leading to an increase in pressure. Conversely, as temperature decreases, the molecules have less energy and move slower, resulting in a decrease in pressure.
The pressure increases in a closed container because as the volume of a gas decreases, the molecules become more crowded and collide with each other more frequently, resulting in an increase in pressure.
The amount of air, or the number of air molecules, in a given space affects pressure. More air molecules in a given volume means more collisions and a higher pressure, while fewer air molecules result in a lower pressure.
The pressure changes in weather systems because of changes in temperature and air movement. For example, when warm air rises, it creates an area of low pressure, while sinking cool air creates an area of high pressure. These pressure differences contribute to the movement of air and weather patterns.