1. What is Flow to Pressure Conversion?

Definition: This calculator converts flow rate (in gallons per minute) to pressure (in pounds per square inch) using fluid dynamics principles.

Purpose: It helps engineers and technicians determine the pressure generated by fluid flow in pipes and hydraulic systems.

2. How Does the Calculator Work?

The calculator uses two formulas:

Where:

• \( P \) — Pressure (psi)
• \( V \) — Velocity (ft/s)
• \( \rho \) — Fluid density (lb/ft³)
• \( Q \) — Flow rate (GPM)
• \( A \) — Cross-sectional area (ft²)

Explanation: First converts flow rate to velocity, then calculates dynamic pressure based on velocity and fluid density.

3. Importance of Flow-Pressure Conversion

Details: Proper pressure calculation ensures system safety, proper component selection, and efficient operation of hydraulic systems.

4. Using the Calculator

Tips: Enter flow rate in GPM, cross-sectional area in square feet, and fluid density (default 62.4 lb/ft³ for water). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the 448.83 conversion factor?
A: This converts GPM to ft³/s and accounts for the area unit (1 GPM = 0.002228 ft³/s, inverse is ~448.83).

Q2: Why is density important?
A: Heavier fluids generate more pressure at the same velocity. Water is 62.4 lb/ft³, oils are typically 55-58 lb/ft³.

Q3: Does this account for friction losses?
A: No, this calculates dynamic pressure only. System pressure would include static head and friction losses.

Q4: What's a typical pipe velocity?
A: For water, 4-8 ft/s is common. Higher velocities increase pressure but also friction losses.

Q5: How do I find cross-sectional area?
A: For circular pipes: \( A = \pi \times (diameter/2)^2 \), with diameter in feet.