Differential Pressure when Flow in SCFH is known

D=Inside pipe diameter

Enter pressure in PSIG

Enter temperature in Degrees Farenheit

Gs=Specific Gravity @ standard conditions

Sch. 40 Sch. 80

Enter nominal line size in inches

SCFH=Flow in Standard Cubic Feet per Hour

Your answer in inches of W.C. D/P.

Find flow in SCFH when Differential Pressure is known

DP=Differential pressure in inches of water column

Your answer in Standard Cubic Feet per Hour