The diagram below indicates the air leakage or air volume passing through orifices ranging size 1/64 - 1/4 inches. For well rounded nozzles multiply the vlues in the diagram with 0.97. For sharp edged nozzles multiply the values with 0.65.
- 1 psig = 6.9 kPa = 0.069 bar
- 1 inch = 25.4 mm
- 1 scfm = 0.472 nl/s
Air, LNG, LPG and other common gas properties, pipeline capacities, sizing of relief valves.
An introduction to the different types of fluid flowmeters - Orifices, Venturies, Nozzles, Rotameters, Pitot Tubes, Calorimetrics, Turbine, Vortex, Electromagnetic, Doppler, Ultrasonic, Thermal, Coriolis.
The orifice, nozzle and venturi flow rate meters makes the use of the Bernoulli Equation to calculate fluid flow rate using pressure difference through obstructions in the flow.
Capacity of natural gas orifices.
Steam flow through orifices - for steam pressures ranging 2 - 300 psi
Steam leaks through orifices for pressures ranging 250 - 600 psi