Hydraulic Directional Valve Types


For hydraulic designers, hydraulic engineers and some workers, hydraulic valves are often used. What are the hydraulic valves? How does it work?


Hydraulic valve is divided into hydraulic directional valve, manual reversing valve, multi-way reversing valve, pressure control valve, cartridge valve, relief valve, pressure reducing valve, sequence valve, throttle valve, speed regulating valve, cartridge valve Such as valves, hydraulic valves are components used to control the pressure, flow and direction of liquids in hydraulic transmission. The one that controls the pressure is called the pressure control valve, the one that controls the flow is called the flow control valve, and the one that controls the opening, closing and flow direction is called the directional control valve. Let's take a look at their working principles.


Speed regulating valve: The speed regulating valve is composed of throttling and differential pressure reducing valve in series. It is mainly used to adjust the movement speed of the actuator and make its speed stable. It is both a regulating element and a detection element. The pressure reducing valve and the throttle valve can be in the front or the rear.


Cartridge valve: The cartridge valve is different from the ordinary hydraulic control valve we often say. Its valve core structure is simple, the action is sensitive, and the sealing performance is good. But relatively speaking, the function is relatively small, mainly to realize the on or off of the hydraulic circuit. Only when used in combination with the ordinary hydraulic control valve, can the control of the direction, pressure and flow of the system oil be realized.


Hydraulic reversing valve; Hydraulic reversing valve is a reversing valve that uses the pressure oil of the control oil circuit to change the position of the valve core. It is easy to operate and has a large starting force. However, when the flow rate of the hydraulic control oil is large, the reversing shock will also be relatively large. Therefore, in order to control the moving speed of the spool, the shock is reduced. Usually a one-way throttle (damping adjuster) is installed in front of the hydraulic pilot pressure port.


Manual reversing valve: The manual reversing valve is a directional control valve operated by a manual lever, which plays the role of reversing (changing the direction of the liquid flow) and switching (connecting or cutting off the liquid flow) in the hydraulic system. It is easy to operate, reliable, and requires no electronics. It can be said that it is very simple to install and use. The disadvantage is that it can only be operated manually, and the degree of automation is not high.


Hanjiu's hydraulic directional valve products include most of the types. Hanjiu's hydraulic reversing valves are mainly divided into single block type and segment type according to the structure, which are used in high-pressure hydraulic systems, such as drilling machines. , sanitation, etc. There are also many ways to operate. There are manual, joystick, cable, pneumatic, solenoid valve, electro-pneumatic, electro-hydraulic, you can choose and buy according to your own needs, and this product is cheap, compact and overload stable. Great value for money, so what are you waiting for? If you have demand, please visit www.hjhydraulic.com for purchase.



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