Cv Value For Valves

Equations displayed for easy reference.

Cv value for valves. In the chart below, we show the approximate cv value of butterfly valves ranging from 2 to 24 and at various disc angles. Technical information | applications | corrosion data. The process of valve size selection, the same formula is used determine the valve cv necessary for a required flow rate and desired pressure drop.

Can anybody educate me on how i go about calculating cv coefficient values for relief valves. 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. Many manufacturers around the world have adopted cv as the standard value to express the flow capacity of their components.

Kv = 0.864 cv at a particular percentage of opening of valve giving cv = 1 will pass 1us gpm ( at 60 °f) and a pressure differential of 1 psi upstream and downstream across the valve. Reserves the right to revise without notice.‐ unit : For the same pressure conditions, if we increase the valve opening to create cv = 10, it will pass 10 us gpm provided 1 psi pressure drop across the valve (remains same).

David simpson, pe muleshoe engineering This calculator can be used to help select a valve with enough flow capacity for a given application. C v = q sg δ p.

Corrosion resistant products ltd todmorden road littleborough ol15 9eg. Size 150 300 600 900 1500 2500 2 42 42 42 45 38 25 2.5 67 67 67 / / / 3 100 100 100 90 95 65 4 185 185 185 170 170 1005 6 440 440 440 400 395 265 Online calculator to quickly determine valve and orifice cv & kvs values for air.

On the right, we have a cv chart showing flow curves for two different valves: Has been contributed to offer high quality product to the global market. Flow coefficient (cv or kv) value.