1. What is the GPM from PSI Equation?

The GPM from PSI equation calculates flow rate in gallons per minute based on pressure (PSI) and flow coefficient (CV). This is commonly used in fluid dynamics and hydraulic system calculations.

2. How Does the Calculator Work?

The calculator uses the equation:

Where:

• \( PSI \) — Pressure in pounds per square inch
• \( CV \) — Flow coefficient (dimensionless)
• \( GPM \) — Flow rate in gallons per minute

Explanation: The equation shows the relationship between pressure, flow coefficient, and resulting flow rate in a hydraulic system.

3. Importance of Flow Rate Calculation

Details: Accurate flow rate calculation is crucial for designing hydraulic systems, selecting appropriate valves, and ensuring proper system performance.

4. Using the Calculator

Tips: Enter pressure in PSI and flow coefficient (CV). All values must be valid (PSI > 0, CV > 0).

5. Frequently Asked Questions (FAQ)

Q1: What is the flow coefficient (CV)?
A: CV is a dimensionless number that represents the flow capacity of a valve or fitting at a given pressure drop.

Q2: What are typical CV values?
A: CV values vary by valve size and type, ranging from less than 1 for small valves to over 1000 for large valves.

Q3: When is this equation most accurate?
A: The equation is most accurate for water at 60°F flowing through full-port valves with turbulent flow.

Q4: Are there limitations to this equation?
A: The equation doesn't account for viscosity changes, laminar flow conditions, or compressible fluids like gases.

Q5: How does temperature affect the calculation?
A: For fluids other than water at 60°F, a correction factor based on specific gravity and viscosity may be needed.