Manual Hydraulic Directional Control Valves

What is a manual hydraulic directional control valve? Manual hydraulic directional control valve is to use a manual lever to manipulate the movement of the valve spool to change the working position of the valve and control the direction of liquid flow. The positioning methods of manual hydraulic directional control valve spool include steel ball positioning type and spring return type. What are its working principles and features? Let's take a look!

The working principle of the manual hydraulic directional control valve: when the manual hydraulic directional control valve is working, the thrust generated by the hand operation rotates the driving shaft by the driving transmission mechanism outside the valve, the swinging arm starts, and the valve plate is opened, so that the working fluid will lead from the left inlet to the lower outlet of the valve, and the right inlet will change to the lower outlet to achieve the purpose of changing the flow direction periodically.

The feature of the manual hydraulic directional control valve is: the valve core and stroke can be controlled by the joystick within a certain range (between the middle position and the reversing end position), that is, the opening of each oil port can be adjusted according to needs, so that it has the function of throttling in the process of reversing. Accurate action, high degree of automation, stable and reliable work, but need to be equipped with drive and cooling system, the structure is more complicated; The disc structure is simpler and is mostly used in production processes with small flow rates

Structural characteristics of manual hydraulic directional control valve: directional control valve is mainly composed of valve body, sealing assembly, cam, valve stem, handle and bonnet and other parts. The valve is driven by a handle, through which the stem and cam rotate, and the cam has the function of positioning the opening and closing of the driving and locking sealing components. The handle rotates counterclockwise, and the two sets of sealing components close the two channels at the lower end under the action of the cam, and the two channels at the upper end communicate with the inlet of the pipe device. On the contrary, the two channels at the upper end are closed, and the two channels at the lower end communicate with the inlet of the pipeline device, realizing non-stop commutation.

Manual hydraulic directional control valve is suitable for frequent action and short working duration, its operation is relatively safe, and it is often used in construction machinery.

Elephant Fluid Power manufactures and sells manual hydraulic control valves and a variety of other hydraulic products. Elephant fluid power is a leader in the field of hydraulics, the quality of their products is generally better than peer products, this is because elephant fluid power not only focuses on product research and development, has a dedicated young creative research and development team, but also because they strictly control the production process, elephant fluid power adopts German advanced production equipment to ensure that product production is error-free, All products will undergo multiple inspections by the staff before leaving the factory to ensure that customers have no quality problems with the products. The long-term use of hydraulic products is inseparable from daily maintenance, and Elephant Fluid Power will provide you with technical support to make customers worry-free.

If you want to know more about the hydraulic industry or buy related products, please take a look at the official website of Elephant Fluid Power.

hydraulic directional control valves diagrams

manual hydraulic flow control valve

hydraulic directional valve troubleshooting