PeterPaul has created this page for you so you can calculate the flow or Cv (flow coefficient) to make the relationship visible between the pressure drop (the difference in pressure between two points of a liquid/gas carrying network) and the flow rate.

The use of this flow coefficient (Cv) calculator offers a standard calculation to compare valve capacities and sizing for a wide range of applications. The type and sizing of a valve or regulator can have a large impact on the performance of the assembly for transferring gas or liquids in the system.

Our sales department is ready to answer questions and to solve your valve needs. Please feel free to call, chat or email us.

Liquid Flow

Calculate Flow in GPM

Calculate Cv

Calculate P1-P2

Gas Flow P2 > 53% of P1 subsonic

Calculate Flow in CFM

Calculate Cv

Approx. Calculate P1

Approx. Calculate P2

Gas Flow P2 < 53% of P1 sonic

Calculate Flow in CFM

Calculate Cv

Calculate P1