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PSI to GPM Formula:
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The PSI to GPM calculation converts pressure (PSI) to flow rate (GPM) using a nozzle factor. This is commonly used in fluid dynamics, irrigation systems, and firefighting to determine water flow rates based on pressure and nozzle characteristics.
The calculator uses the formula:
Where:
Explanation: The square root relationship between pressure and flow rate is derived from Bernoulli's principle, where flow is proportional to the square root of the pressure difference.
Details: Accurate GPM calculation is essential for designing efficient fluid systems, ensuring proper nozzle selection, and optimizing water usage in various applications including agriculture, fire protection, and industrial processes.
Tips: Enter PSI value (must be ≥0) and nozzle factor (must be ≥0). The calculator will compute the flow rate in gallons per minute.
Q1: What is a typical nozzle factor value?
A: Nozzle factors vary by nozzle type and size. Common values range from 5 to 30 for standard nozzles. Consult manufacturer specifications for exact values.
Q2: Why is there a square root relationship between PSI and GPM?
A: The square root relationship comes from the fundamental physics of fluid flow through an orifice, where flow rate is proportional to the square root of the pressure differential.
Q3: Can this formula be used for all fluids?
A: This formula is primarily designed for water. For other fluids, additional factors like density and viscosity need to be considered.
Q4: How accurate is this calculation?
A: The calculation provides a good estimate for ideal conditions. Actual flow rates may vary due to factors like friction losses, nozzle wear, and fluid properties.
Q5: What are common applications of this calculation?
A: This calculation is widely used in firefighting, irrigation systems, hydraulic engineering, and any application where water flow through nozzles or orifices needs to be determined.