Who has the structure of pressure reducing valve?

The pressure reducing valve is a valve that reduces the inlet pressure to the required outlet pressure by adjustment, and automatically keeps the outlet pressure stable by the energy of the medium itself. From the point of view of fluid mechanics, the pressure reducing valve is a throttling element with variable local resistance, that is, by changing the throttling area, changing the flow and kinetic energy of fluid, different pressure losses are generated, so as to achieve the purpose of pressure reduction. Then, depending on the adjustment of the control and adjustment system, the pressure fluctuation behind the valve is balanced with the spring force, and the pressure behind the valve is kept constant within a certain error range.