# Control Valve Cv Si Units ### Si and metric cv flow coefficients si (international standard) cv flow coefficients are the number of liters per minute of water which will pass through a given orifice or passage at a pressure drop of 1 bar.

Control valve cv si units. Of water at 60 °f with a pressure drop of 1 psi. Units by dividing it by 54.9. The flow of water through a valve at 60°f in us gallons/minute (gpm) at a pressure drop of 1lb/in².

Valves are tested by running water through it before publishing the cv value. ※2 calculation of viscosity correction is necessary when the fluid is liquid and the kinematic viscosity is 20 mpa・s or more and the calculated cv value is 0.01 or less. There are now standardized calculations that are becoming accepted worldwide.

The flow of water through a valve at 60 o f in us gallon/minute at a pressure drop of 1 lb/in 2 Engineering units are by default set to us units, but can be easily changed to si units. The use of this flow coefficient (c v) calculator leads to a standard calculation to compare valve capacities.

Flow coefficient, cv, and flow factor, kv, are values used to specify the hydraulic capacity of a control valve. Online calculator to quickly determine steam flow rate through a valve. The mass flow rate of superheated steam through a valve can be calculated from the valve cv thanks to the following formula :

Equations displayed for easy reference. It is often convenient to express the capacity and flow characteristic of a control valve in terms of the. Each has space for four simultaneous calculations.

The valve flow coefficient cv or its metric equivalent kv has been adopted universally as a comparative value for measuring the capacity of control valves. The stated units formulas below. Cv is determined by the manufacturer of the valve and can be found on the valve manufacturer's website and/or related valve data and specification sheets. ### Шаровые краны Хэбэй Тонгли Автоматическая Клапан

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