What is the KV value of a valve?
Kv-value The Kv-value is a parameter defining the flow rate of valves. It describes the amount of water from 5 to 30C which flows through the valve at a pressure loss of 1 bar.
What is CV in gas flow?
Valve Flow Coefficient (Cv) is a valve’s capacity for a liquid or gas to flow through it. It is technically defined as “the volume of water at 60°F (in US gallons) that will flow through a valve per minute with a pressure drop of 1 psi across the valve.”
What is pressure drop valve?
Pressure drop, or pressure loss, is the difference in pressure as measured between two points in a pipe with flowing fluid. Specific to control valves, it is the difference between the inlet pressure and outlet pressure. Control valve flow is a function of both the pressure drop across the valve and the valve travel.
Why is pressure drop in pipes important?
Pressure drop is the loss of line pressure caused by frictional resistance in the flow path. By determining how much pressure drop each part causes, you can calculate how much pressure you need to run your process. The lower the total pressure drop of the system, the less gas is needed to run it, which saves you money.
What is the relation between flow and pressure?
There is no relationship between pressure and mass flow when we talk about flows in pipes. For any flow to happen, there is a requirement of pressure gradient and not the pressure. Higher the pressure gradient, keeping all other things (fluid, pipe diameter, length) constant, higher is the mass flow rate.