Regarding the hydraulic solenoid valve model, different manufacturers have different arrangements for the model. Here, the editor will give an example to illustrate the meaning of the hydraulic solenoid valve model. For example: 34BYM-L20H-T. Among them, 34 means 3-position 4-way, B means AC type, Y means hydraulic, M means spool valve function, L means threaded connection, 20 means nominal diameter, H means nominal pressure, H means high pressure 31.5MPA, T Indicates the spring centered code. The manual reversing valve is a directional control valve operated by a manual lever. According to different positioning methods, the valve has two types: spring return type and steel ball positioning type. The spring return type manual reversing valve, when the external force of the control handle is cancelled, the return spring pushes the spool back to the initial position. The steel ball positioning type is that when the external force of the joystick is cancelled, the valve core is maintained in the reversing position by the positioning of the steel ball. The 2FRM type speed control valve is a two-way flow control valve. This element is composed of a pressure reducing valve and a throttle valve in series. Because the pressure reducing valve compensates for the pressure of the throttle valve, the flow rate of the speed control valve is not subject to load. The impact of changes remains stable. At the same time, the throttling window is designed in a thin blade shape, and the flow rate changes little by temperature. When the speed control valve is connected in parallel with the one-way valve, the oil flow can return in the reverse direction. DBD type direct-acting relief valve is used to prevent system overload and keep system pressure constant. Structural principle: The pressure oil of the oil inlet acts on its bottom through the damping piston to form a page pressure that counterbalances the spring force. When the secondary hydraulic pressure is less than the spring force of the pressure regulating spring, The poppet valve is closed, this valve does not have a pressure regulating effect. With the continuous increase of inlet pressure. When the hydraulic pressure is greater than the spring force, the poppet valve opens and the excess oil overflows back to the oil tank to stabilize the oil inlet pressure at the set value. DZ-3X type pilot-operated sequence valve: The valve uses the pressure of the oil circuit to control the sequence of actions of the hydraulic cylinder or motor to realize the automatic control of the oil circuit system. Change the connection method of control oil and drain oil, this valve can also be used as unloading valve and back pressure valve. The hydraulic control check valve has a wide range of applications, such as the locking circuit of the hydraulic control check valve, the circuit to prevent the self-weight from falling, the charging valve circuit, the bypass drain valve circuit, the accumulator oil supply circuit, and so on.
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