Cv is a capacity rating for a valve. A valve with a Cv = 1 will flow 1 gpm of water with a differential pressure of 1 psi. If the Cv was 100, it would flow 100 gpm of water with a 1 psi differential pressure.
For non-flashing/cavitating service, Q = Cv * (dP/SG)^0.5. Q is the flow rate in gpm (US gal), dP is the differential pressure in psi and SG is the liquid's specific gravity.
data sheet of control valve
.cv valves are located on top of your engines valve cover.
Cv, or flow coefficient, is a measure of a control valve's capacity to allow fluid flow. It quantifies the amount of fluid (in gallons per minute) that can pass through a valve at a specific pressure drop (usually 1 psi). In gas flow applications, a higher Cv indicates the valve can handle greater flow rates, making it crucial for selecting the appropriate valve for specific system requirements. Understanding Cv helps engineers optimize system performance and maintain desired pressure and flow conditions.
To calculate the flow rate of a control valve, you can use the flow coefficient (Cv) formula: ( Q = Cv \times \sqrt{\Delta P / G} ), where ( Q ) is the flow rate in gallons per minute (GPM), ( \Delta P ) is the pressure drop across the valve in psi, and ( G ) is the specific gravity of the fluid. First, determine the Cv value for the valve at the specific conditions of pressure and temperature. Then, substitute the known values into the formula to find the flow rate.
The CV value is the flow rate required to generate 1 psid of pressure loss through the valve. Since pressure drop follows a basic square law the relationship between Cv, flow and pressure loss is as follows: DP = k x Flow^2 eq 1 Where k is a constant that represents the flow shape in the wide open condition. Since Cv is the flow rate at 1 psi of pressure loss then it follows that DP = k x Cv^2 = 1 eq 2 solving for k from eq 2 yields k = 1/Cv^2 eq 3 substituting eq 3 into eq 1 yields DP = (Flow/Cv)^2 Now you have an equation that will tell you the pressure and flow relationship for that particular valve with a particular fully open Cv value. In short, the higher the Cv value the more flow the valve will allow for the same pressure loss or the less pressure loss for the same flow. Good luck
send my CV to you.
The first and easiest answer is to remove the wheel covers and listen again for the clicking noise. It could be a pebble loose inside a wheel cover or a tire valve stem clicking against the wheel cover. If it's not that easy, and your truck has CV joints, I would suspect a bad CV joint. Look for a torn CV boot.
The Cv value, or flow coefficient, for air or gas is calculated using the formula: [ Cv = \frac{Q}{\sqrt{\Delta P / \rho}} ] where ( Q ) is the flow rate in gallons per minute (GPM), ( \Delta P ) is the pressure drop across the valve in psi, and ( \rho ) is the density of the gas in pounds per cubic foot (lb/ft³). For gases, the Cv can also be determined using standard conditions and adjustments for specific gas properties.
Ahlan (اهلاً) means "Hello". CV does not mean anything in Arabic, it is likely an English-language name. So, "Ahlan CV" means "Hello, CV!"
105 = CV
Cytopath CV is a Pap smear.
The plural form of CV is CVs.