The pressure regulators adopt a special flow path structure (as shown in Figure 1). When the high pressure medium flows through the orifice from the inlet, the flow rate of the medium increases and the pressure decreases, thus achieving the purpose of pressure regulation. In addition, the pressure regulators can balance the medium load generated by the inlet pressure and the outlet pressure by adjusting the spring load, so as to control the outlet pressure and maintain it, and the force balance of the pressure regulators meets the formula (1).
Fload element = Fsensing element + Fcontrol element Formula (1)
Fload element = range spring load
Fsensing element = outlet pressure × diaphragm effective area
Fcontrol element = inlet pressure × poppet effective area + poppet spring load