Читать книгу Hydraulic Fluid Power - Andrea Vacca - Страница 74

Flow restrictions such as orifices, flow nozzles, and venturis are known for introducing pressure losses associated with flow rate. In hydraulic control systems, the relationship between pressure drop and flow rate established by these restrictions (generally referred to as orifices) is the basis of the operating principle accomplished by most of the control elements in hydraulic systems, such as hydraulic control valves. Therefore, an entire chapter is dedicated to the orifice equation and its uses in hydraulic systems.