Orifice Flow Calculator — Liquids

STEP BY STEP

How to use orifice flow calculator — liquids

1. Check the input units and assumptions.
2. Review the result and example.

IN PRACTICE

Example

d = 5 mm, Δp = 1 bar, water 1000 kg/m³, Cd = 0.62: Q ≈ 10.33 L/min.

GOOD TO KNOW

Which model does this calculator use?

Small orifice from a large reservoir, negligible approach velocity. Liquid only: no gas, steam, choking, cavitation prediction or pipe-meter beta correction. Cd depends on geometry and Reynolds number; 0.62 is an illustrative assumption.