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):