WebThe flow factor, or flow coefficient of a valve shows the relationship between the pressure drop and the flow rate. K v is the flow coefficient in metric units, and can be calculated with the following equation: where . K V: Flow factor (m 3 ·h-1 ·bar-0.5) Q: Flow rate (m 3 /h) SG: Specific Gravity of the liquid (dimensionless). For water SG=1 WebCv = 1.156 * Kv. OR Kv = 0.864 * Cv The flow rate for a liquid Q = Cv * Sq. Root of ( ΔP/SG) Q = Flow in US GPM. Cv = Flow Coefficient of control valve ΔP = Differential pressure SG = Specific Gravity of fluid (reference …
Discharge coefficient - Wikipedia
WebDepending on the calculation programs or methods available and engineer may require to convert between one form or another. This article details the equations required to convert between the resistance coefficient and flow coefficient methods (K, C v and K v ). Tags. All tags from Neutrium articles. 2K Method. 3K Method. Absorbed Power. … Neutrium Podcast Neutrium, everyones favourite engineering resource now has … WebConversion of Cv and Kv. 3. Excel calculation tool. 1. What is the Cv and Kv of a control valve ? Cv and Kv are 2 coefficient allowing to relate the pressure drop through a valve to the flowrate of fluid going through. Cv is commonly called the flow coefficient and Kv is commonly called the flow factor. They have very similar meaning but not ... maxwell kitchen supply sioux falls sd
Control Valve Relation between Cv and Kv Cv = 1.156Kv - Inst Tools
WebHow do we get value 1.156 (Conversion Factor) in formula Cv = 1.156Kv or Cv= 1.156×Q×sqrt (G/delta P). Please explain. Answer: For measuring the valve capacity of control valves, the coefficient Cv or its metric … WebJun 28, 2024 · We care about k-factor because: it ensures the VAV box performs at the EOR’s capacities (i.e. minimum and maximum airflows), satisfying outdoor air (OA) … WebFlow Coefficient and Flow Factor Values. The table below list typical maximum flow coefficient, Cv, and flow factor, Kv, values for full bore ball valves: Nominal Diameter. Max Cv. Max Kv. Inch. mm. gpm.psi. (m³/hr).bar. herpes stages pictures