Orifice Flow Calculations At Low Pressure

Introduction & Importance

Orifice flow calculations at low pressure are crucial in various industries, including HVAC, plumbing, and aerospace, to determine the flow rate through an orifice…

How to Use This Calculator

1. Enter the orifice diameter in millimeters.
2. Enter the pressure drop in Pascals.
3. Select the fluid (air or water).
4. Click ‘Calculate’.

Formula & Methodology

The formula used in this calculator is based on the ideal gas law and Bernoulli’s principle…

Real-World Examples

Data & Statistics

Comparison of Flow Rates for Air and Water

Diameter (mm)	Pressure Drop (Pa)	Air Flow Rate (m³/s)	Water Flow Rate (m³/s)

Expert Tips

• Always ensure the orifice is clean and free of debris.
• Consider using a correction factor for real-world applications.

Interactive FAQ

What is an orifice?

An orifice is a circular opening in a plate or other material…

For more information, see the Engineering ToolBox and the Fluid System Design.