Orifice Plate Sizing

Fluid Type

Tapping Type

Pipe Material

Pipe Nominal Size

Pipe Schedule

Pipe Inside Diameter (D)mm

Flowrate (qm)kg/s

Upstream Pressure (P₁)kPa (abs)

Pressure Differential (ΔP)kPa

Fluid Viscosity (μ)cP

Upstream Density (ρ)kg/m³

Reynolds Number (ReD):-

Beta Ratio (β):-

Expansion Factor (ε₁):-

Discharge Coeff. (C):-

Calculated Orifice Diameter (d):-

Overall Pressure Loss (Δω):-

Pressure Ratio (τ ≥ 0.75):-

Orifice Diameter (d ≥ 12.5mm):-

Pipe Diameter (50-1000mm):-

Beta Ratio (0.2 ≤ β ≤ 0.75):-

Reynolds Number Limit:-

Flow is Subsonic:-

Orifice Plate Sizing Calculator (AS 2360.1.1 / ISO 5167)