Hydraulic pump proportional solenoid valve 195-9700

        Proportional valve is a new type of hydraulic control device. In the ordinary pressure valve, flow valve and direction valve, the proportional electromagnet is used to replace the original control part, and the pressure, flow or direction of the oil flow is controlled remotely according to the input electrical signal continuously and proportionally. Proportional valves generally have pressure compensation performance, and the output pressure and flow rate can be unaffected by load changes.

        With the development of hydraulic transmission and hydraulic servo systems, some hydraulic systems that require continuous control of pressure, flow and direction without high control accuracy have appeared in production practice. Since the ordinary hydraulic components can not be full enough to have certain servo requirements, and the use of electro-hydraulic servo valves is too wasteful because the control accuracy requirements are not high, a proportional control valve between the ordinary hydraulic components (switch control) and the servo valve (continuous control) has been produced in recent years.

       Electro-hydraulic proportional control valve (referred to as proportional valve) is a kind of cheap electro-hydraulic control valve with good anti-pollution performance. The development of proportional valve experiences two ways, one is to replace the manual adjustment input mechanism of the traditional hydraulic valve with proportional electromagnet, on the basis of the traditional hydraulic valve: the development of a variety of proportional direction, pressure and flow valves; The second is that some original electro-hydraulic servo valve manufacturers developed after reducing the design and manufacturing accuracy on the basis of electro-hydraulic servo valves.

      Proportional valve is composed of DC proportional solenoid and hydraulic valve two parts, proportional valve to achieve continuous control of the core is the use of proportional solenoid, proportional solenoid variety, but the working principle is basically the same, they are developed according to the proportional valve control needs.