How Atmospheric Pressure Affects Pump Pressure
Atmospheric pressure is probably the most important variable in our climate when it comes to predicting what tomorrow’s weather will be, and it also is important in predicting how a pumper will perform. While the variation in pressure helps us predict weather conditions, it also has an effect on pumper performance, although not usually an important one.
But when the performance possible at high altitudes is considered, it is of the utmost importance. The variation in any area rarely exceeds 1 inch of mercury, but the pressure drops about 1 inch for every 1000 feet of altitude. For altitudes above about 2000 feet, therefore, this becomes an important consideration.
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