Regulator Station Sizing Calculator

Per AGA Guidelines & 49 CFR 192

Regulator Station Sizing Calculator
Sizes pressure regulators for gas distribution stations. Calculates required Cv, recommended regulator size, noise level estimate, pressure drop ratio, choked flow check, and relief valve sizing per AGA and 49 CFR 192.

Pressure Conditions

psig
psig
SCFH
Standard cubic feet per hour at 14.73 psia, 60°F

Gas Properties

-
Natural gas: 0.55-0.70
°F

Station Configuration

Pilot-operated for high flow / tight accuracy

Cv Sizing Equation

Cv = Q / (1360 × √((P1² - P2²) / (SG × T)))
Q = Flow rate (SCFH)
P1, P2 = Inlet/outlet pressure (psia)
SG = Specific gravity
T = Temperature (°R)

Standards & References

  • AGA
    Gas Regulator Station Design Guidelines
  • 49 CFR 192
    Transportation of Natural and Other Gas by Pipeline
  • ISA 75.01
    Flow Equations for Sizing Control Valves