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What You Need to Know About CV

... gravity of the fluid, and P is the pressure drop across the valve (psi). Because air is compressible, CV must have additional ... is not an effective orifice. Factors such as turbulence or poppet stroke of the valve make the actual valve orifice flow very different ...
Pressure Control vs. Flow Control

... faucet. The controller (hand) turns the handle to open a valve (input action). The valve opens and (hopefully) allows water to flow from ... provides an adjustable restriction to the flow, typically a poppet style valve Load - Part that drives the ...