Burner Gas Train Pipe Sizing Calculator
Reviewed by Hamza Gujjar, Algorithm Architect & Software Developer
Last updated: July 26, 2026Burner Gas Train Pipe Sizing Calculator
Undersized gas train piping causes excess pressure drop and noise; oversized piping wastes money and space. This calculator finds the minimum pipe diameter that keeps velocity under a chosen safe limit.
The Formula
D = √(4Q / (π × Vmax))
Worked Example
50 m³/hr of gas flow, limited to 15 m/s maximum velocity: converting to 0.0139 m³/s and solving gives a minimum inside diameter of about 34.3 mm.
How to Use This Calculator
- Enter the gas flow rate in m³/hr.
- Enter your maximum allowable velocity (often 10-20 m/s for low-pressure gas train piping).
Related: Burner Fuel Pressure Calculator.