1. What is Pump Discharge Pressure?

Pump discharge pressure is the pressure developed by a pump at its outlet, calculated from the total dynamic head and fluid properties. It represents the pressure required to overcome system resistance and move fluid through the piping system.

2. How Does the Calculator Work?

The calculator uses the discharge pressure formula:

Where:

• \( Head \) — Total dynamic head in feet (ft)
• \( SG \) — Specific gravity of the fluid (unitless)
• \( 0.433 \) — Conversion factor from feet of water to psi

Explanation: This formula converts hydraulic head to pressure, accounting for the density of the fluid relative to water through specific gravity.

3. Importance of Discharge Pressure Calculation

Details: Accurate discharge pressure calculation is essential for proper pump selection, system design, ensuring adequate flow rates, and preventing cavitation or system overpressure.

4. Using the Calculator

Tips: Enter total dynamic head in feet and specific gravity of the fluid. Both values must be positive numbers. Specific gravity for water is 1.0.

5. Frequently Asked Questions (FAQ)

Q1: What is total dynamic head?
A: Total dynamic head is the total equivalent height that a fluid is to be pumped, taking into account friction losses in the pipe.

Q2: Why is specific gravity important?
A: Specific gravity accounts for the density of the fluid relative to water. Denser fluids require more pressure to achieve the same head.

Q3: What is the 0.433 conversion factor?
A: This factor converts feet of water column to pounds per square inch (psi). One foot of water column equals 0.433 psi.

Q4: When is this calculation used?
A: This calculation is used in pump sizing, system design, troubleshooting, and performance verification across various industries.

Q5: Are there limitations to this formula?
A: This formula assumes steady-state conditions and may not account for transient effects, viscosity variations, or complex system dynamics.