Size an orifice/restrictor for target flow at given pressures.
These optional products are directly related to the pneumatic task you are calculating.
If you buy through these links, PneumaForge may receive a commission at no extra cost to you.As an Amazon Associate, PneumaForge earns from qualifying purchases.
Use the Pneumatic Flow Restrictor Sizing Calculator to size an orifice/restrictor for target flow at given pressures. The calculator uses Target reference flow, Upstream absolute pressure, Downstream absolute pressure, Air temperature and Discharge coefficient Cd and reports required orifice diameter/area.
Read the result in the context of the selected units and pressure basis. For this tool, the primary outputs are required orifice diameter/area. Change one input at a time when comparing scenarios so the effect of each variable remains clear.
PneumaForge applies this verified method: Inverse compressible orifice equation. The functional engine is shared with related tools in the compressible-orifice family, while this page solves the specific intent represented by pneumatic restrictor sizing calculator.
Inverse compressible orifice equationReproducible example: start with the calculator's default values (Target reference flow = 500; Upstream absolute pressure = 7.01325; Downstream absolute pressure = 1.01325; Air temperature = 20) and calculate the result. Then change the variable most relevant to your application and compare the new required orifice diameter/area against the baseline.
Ideal-gas, quasi-steady, known discharge coefficient C_d. P₁,P₂ absolute. Flag non-air gases unless γ,R supplied.
It is designed to size an orifice/restrictor for target flow at given pressures. The reported outputs are required orifice diameter/area.
The calculator uses Target reference flow, Upstream absolute pressure, Downstream absolute pressure, Air temperature and Discharge coefficient Cd. Only use values that represent the same operating condition or design case.
The calculation follows: Inverse compressible orifice equation. The page also states the assumptions that define where the method is valid.
Ideal-gas, quasi-steady, known discharge coefficient C_d. P₁,P₂ absolute. Flag non-air gases unless γ,R supplied.
Yes. PneumaForge converts supported units through canonical engineering units. For compressed-air reference flows and pressure bases, the reference pressure and temperature must also remain consistent.