Pressure Drop Check Calculators

2. Design Considerations

2.1 Velocity Check for Liquid or Gas Applications

Note: These online calculators are for your convenience. Please verify all results.

Pressure Drop Check Liquid-English

Flow Rate (gpm): 
Flow Coefficient (gpm): 
Fluid Weight Density (lbs./cub ft.): 



Differential Pressure (psid): 

Pressure Drop Check Liquid-Metric

Flow Rate (lpm): 
Flow Coefficient (lpm): 
Fluid Weight Density (Kg/cub m): 



Differential Pressure (bar): 

Pressure Drop Check Gas-English

Flow Rate (SCFM): 
Resistance Coefficient: 
Temperature, Rankine( F+460): 
Specific Gravity (air=1.0): 
Equivalent diameter (in.): 
Pressure (psia, 14.7 at atmoshpheric): 



Differential Pressure (psid): 

Pressure Drop Check Gas-Metric

Flow Rate (m/min):
Resistance Coefficient:
Temperature, Rankine( F+460):
Specific Gravity (air=1.0):
Equivalent diameter (cm.):
Pressure (bars, 1.0 at atmoshpheric):



Differential Pressure (bar):