Application of electro-hydraulic proportional valve in steel pipe hydraulic press

An electro-hydraulic proportional valve is a hydraulic component that can adjust and control the pressure, direction, and flow rate of liquid flow in proportion to changes in input electrical signals. With the development of programmable logic controllers (PLCs) and automatic control technology, electro-hydraulic proportional valves have been widely used in industrial control systems. The application of electro-hydraulic proportional valve in the oil-water pressure balance control system of steel pipe hydrostatic testing machine fully reflects its advantages of convenient pressure control, good regulation performance, and high control accuracy, achieving timely dynamic balance between oil pressure and water pressure.