Home
Back
Nozzle Pressure Equation:
| From: | To: |
The nozzle pressure equation calculates the pressure required at a nozzle to achieve a specific flow rate of water, based on the flow coefficient (Cv) of the nozzle. This is essential in firefighting, irrigation, and industrial spraying applications.
The calculator uses the nozzle pressure equation:
Where:
Explanation: The equation shows that pressure increases with the square of the flow rate and decreases with the square of the flow coefficient.
Details: Accurate nozzle pressure calculation is crucial for designing efficient water systems, ensuring proper spray patterns, and optimizing water usage in various applications including fire protection and agricultural irrigation.
Tips: Enter flow rate in gallons per minute (gpm) and the flow coefficient (Cv) value. Both values must be positive numbers greater than zero.
Q1: What is the flow coefficient (Cv)?
A: The flow coefficient represents the flow rate in gallons per minute of water at 60°F that will pass through a valve or nozzle with a pressure drop of 1 psi.
Q2: What are typical Cv values for nozzles?
A: Cv values vary widely depending on nozzle type and size, ranging from less than 1 for small nozzles to over 1000 for large industrial nozzles.
Q3: Does this equation work for fluids other than water?
A: This specific equation is designed for water. For other fluids, additional factors such as specific gravity must be considered.
Q4: What are common applications of this calculation?
A: This calculation is used in firefighting equipment design, irrigation system planning, industrial spray applications, and hydraulic system design.
Q5: How accurate is this calculation?
A: The calculation provides a theoretical value that is generally accurate for water at standard conditions, but actual results may vary slightly due to factors like water temperature and system losses.