Water Head Pressure Formula:
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Definition: This calculator converts water pressure in pounds per square inch (psi) to equivalent water head in feet.
Purpose: It helps engineers, plumbers, and water system designers convert between pressure and water column height.
The calculator uses the formula:
Where:
Explanation: The conversion factor comes from the relationship between pressure and the height of a water column.
Details: This conversion is essential for designing water systems, understanding pump capabilities, and interpreting pressure measurements in terms of water height.
Tips: Simply enter the pressure value in psi. The calculator will automatically compute the equivalent water head in feet.
Q1: Why is the conversion factor 2.31?
A: This comes from the specific weight of water (0.433 psi/ft). The inverse (1/0.433) gives 2.31 ft/psi.
Q2: Does this work for other liquids?
A: No, this factor is specific to water. Other liquids would require different conversion factors based on their density.
Q3: Is temperature a factor in this conversion?
A: The factor assumes water at standard conditions (60°F). For very precise calculations at different temperatures, adjustments may be needed.
Q4: How accurate is this conversion?
A: For most practical purposes, it's sufficiently accurate. The exact value is 2.30666 ft/psi, but 2.31 is the standard rounded value.
Q5: What's a practical application of this conversion?
A: Determining how high a pump can lift water (e.g., a 50 psi pump can lift water about 115.5 feet).