966G 950G 980G fuel solenoid valve 2076806 excavator accessories

966G 950G 980G fuel solenoid valve 2076806 excavator accessories

The proportional valve is called the electro-hydraulic proportional valve, which is a kind of hydraulic valve that converts the input electrical signal into force or displacement proportionally, so as to continuously control the pressure, flow and other parameters. The proportional valve is composed of DC proportional electromagnet and hydraulic valve. The hydraulic valve part is little different from the general hydraulic valve, and the DC proportional electromagnet is different from the electromagnet used in the general solenoid valve, and the displacement output and suction output can be obtained proportional to the given current by using the proportional electromagnet. Proportional valve according to its control parameters can be divided into proportional pressure valve, proportional flow valve, proportional direction valve three categories
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.