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Flow Calculator

Calculate theoretical Relief Valve Discharge Capacity given an Orifice and the Flow Coefficient Kd for an Inlet, Outlet and Media condition.

Input Values   Results
Orifice Diameter (inches) (between .01 and 1)
Orifice Discharge Coefficient (Kd) (between .01 and .80)
Upstream Pressure (psig) (use 110% of nominal set pressure) (between .5 and 2640)
Downstream Pressure (psig) (between 0 and 2640)
Upstream Temperature (ºF) (between 40 and 100)
Are you calculating CO2 Flow?
Gas
   
Assumptions: Fluid behaves as an ideal gas.
Note: Generant recommends using a 90% safety factor when sizing from the flow calculator output.