GPMs of water with elevation changes.

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In summary, if you have a 2" water meter restricting flow out of a fire hydrant and want to pump water 1 mile away with an elevation rise of 500', using a 4" hose may increase the flow rate slightly depending on the restriction of the meter and the length of the pipe. However, it is important to note that only authorized individuals should operate a fire hydrant. It is also worth considering if the pressure from the hydrant is boosted and if there is any pressure drop or Cv data for the flow meter.
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rangerdave
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If I have a 2" water meter restrickting flow out of a fire hydrant and want to pump water 1 mile away with an elevation rise of 500' will my GPM's at the outlet increase if I use a 4" hose coming out of the 2" meter or should I stay with 2" hose?
 
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NOTE: Only operate a fire hydrant if you are authorized to do so!

The flow rate will increase some if you run 4 inch pipe. It depends on the magnitude of the restriction of your 2" flow meter compared to 500 feet of 4 inch pipe.

Your 500 ft rise is worth about 217 psi whcih may be far larger than the meter or pipe. Is the pressure from the hydrant boosted?

Do you have pressure drop or Cv data for your flow meter?
 
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What is the relationship between GPMs of water and elevation changes?

The GPMs (gallons per minute) of water and elevation changes have a direct relationship. As elevation increases, the GPMs of water also increase. This is because of the force of gravity, which causes water to flow from higher elevations to lower elevations.

How do elevation changes affect the flow rate of water?

Elevation changes affect the flow rate of water by increasing or decreasing the pressure on the water. As elevation increases, the pressure on the water decreases, resulting in a slower flow rate. Conversely, as elevation decreases, the pressure on the water increases, resulting in a faster flow rate.

Can changes in elevation affect the purity of water?

Yes, changes in elevation can affect the purity of water. As water flows downhill, it can pick up sediment and other contaminants, making it less pure. Additionally, higher elevations may have different environmental factors, such as different levels of pollution, which can also affect the purity of water.

How does the shape of the land affect GPMs of water with elevation changes?

The shape of the land can have a significant impact on GPMs of water with elevation changes. Landforms such as mountains, valleys, and plateaus can affect the direction and speed of water flow, which ultimately affects the GPMs of water. For example, water may flow faster down a steep mountain slope compared to a gentle slope, resulting in higher GPMs of water.

What factors besides elevation can influence GPMs of water?

Aside from elevation, other factors that can influence GPMs of water include the size of the water source, the type of soil or rock the water is flowing through, and the presence of obstacles such as dams or vegetation. These factors can impact the speed and direction of water flow, ultimately affecting the GPMs of water.

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