1. What is Head Pressure Calculation?

Definition: This calculator converts the height of a water column in feet to pressure in pounds per square inch (psi).

Purpose: It helps engineers, plumbers, and technicians determine the static pressure at the base of a water column.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Pressure (psi)
• \( h \) — Height of water column (feet)
• 0.433 — Conversion factor (psi per foot of water)

Explanation: Each foot of water height creates approximately 0.433 psi of pressure at its base.

3. Importance of Head Pressure Calculation

Details: Accurate pressure calculations are essential for designing water systems, selecting appropriate pumps, and ensuring system safety.

4. Using the Calculator

Tips: Simply enter the height of the water column in feet. The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 0.433?
A: This comes from the weight of water (62.4 lb/ft³) divided by 144 in²/ft², which equals 0.433 psi per foot.

Q2: Does this work for other liquids?
A: No, this is specific to water. For other liquids, multiply by their specific gravity.

Q3: Is this static or dynamic pressure?
A: This calculates static pressure only. Dynamic pressure would consider flow velocity.

Q4: How accurate is this calculation?
A: It's accurate for pure water at standard conditions (4°C). Temperature and impurities may cause slight variations.

Q5: What about elevation effects?
A: This assumes standard atmospheric pressure at sea level. For high elevations, atmospheric pressure differences may be significant.