The use of superimposed hydraulically controlled check valves requires attention to the control pressure, selecting appropriate structures and oil drainage methods, and reasonably matching reversing valves. The specific details are as follows: Ensure control pressure and control pressure requirements: It is necessary to ensure that the superimposed hydraulically controlled check valves have sufficient control pressure, and the control pressure is absolutely not allowed to lose pressure. Pay special attention to whether the control pressure meets the requirements of reverse opening. If the control of the hydraulically controlled check valve is directed from the main system, the impact of the change in the main system pressure on the control oil circuit pressure should be analyzed to avoid malfunction of the hydraulically controlled check valve. Reasonable selection of structure and oil drainage method is based on the fluid resistance (back pressure) size after the reverse oil outlet cavity: For internal leakage superimposed hydraulic control check valve, when the reverse oil outlet pressure exceeds a certain value, the hydraulic control part will lose its control effect. Therefore, internal leakage hydraulic control check valve is generally used in situations where there is no back pressure or small back pressure in the reverse oil outlet cavity; while external leakage hydraulic control check valve can be used in situations where the reverse oil outlet cavity has a higher back pressure to reduce the maximum

The usage method of 4WE10 solenoid reversing valve mainly includes installation, operation, maintenance and other links. The following is a specific description: Installation selection installation location: 4WE10 solenoid reversing valve has a variety of installation locations, which need to be determined based on the actual hydraulic system layout and space requirements. For example, in terms of ambient temperature, when sealed with nitrile rubber, the ambient temperature is -30 to +50°C; when sealed with fluoroelastic rubber, the ambient temperature is -20 to +50°C. Connecting oil circuit: The 4WE10 solenoid reversing valve has oil inlet P, two working oil ports A, B and oil return port T. It is necessary to correctly connect each oil port according to the design requirements of the hydraulic system to ensure the oil circuit is unobstructed and avoid leakage or connection errors. Operation power-on and power-off control: This solenoid reversing valve uses the suction force of the solenoid to push the valve core to change the working position of the valve. When the solenoid is turned on, the control valve core will move from the stationary position to the desired terminal position, releasing the corresponding

The usage method of superimposed relief valve mainly involves installation, pressure adjustment and daily maintenance. The following is a detailed introduction: Installing superimposed relief valves is usually installed between the reversing valve and the bottom plate. Superimposed valves of the same diameter are superimposed in a certain order and connected in series with bolts. When installing, you need to pay attention to the damping holes on the oil circuit or main valve core. The pressure valve unit with the damping hole is the pressure valve unit, and the direction valve unit without the damping hole is the direction valve unit. Ensure the connection is correct. For example, during the installation process, it is necessary to ensure that the connection between the main oil circuit of the cone valve and the pilot valve and the control oil circuit is accurate to avoid the system from operating normally due to connection errors. Pressure adjustment and adjustment steps: When performing pressure adjustment, first loosen the lock nut and rotate the pressure adjustment screw clockwise, and the pressure will rise. After adjustment is completed, the lock nut must be tightened to prevent the pressure adjustment screw from loosening, resulting in unstable pressure. Note: The minimum adjustment pressure is equal to the characteristics of the minimum adjustment pressure

The use of solenoid reversing valve mainly includes the following aspects: Power connection: Before use, confirm the power type and rated voltage used by the solenoid valve, and connect the power supply as required. The solenoid is divided into DC or AC, so the control power supply parameters must be consistent with the solenoid valve, otherwise the reversing valve may not work properly or the solenoid is burned. Slide valve function inspection: Solenoid valves have multiple slide valve functions, and there are differences between formal and reverse installation when leaving the factory. When using it, check whether the slide valve function meets the requirements to avoid affecting the normal operation of the system. Oil cleanliness: Ensure that the cleanliness of the oil meets the requirements. Since the fitting gap between the valve core of the solenoid valve and the valve body hole is small, impurities may cause the valve core to be stuck, so the filtration accuracy of the oil must be strictly controlled. Oil return port pressure: Note that the pressure of the solenoid valve oil return port T should not exceed the allowable oil return back pressure. For example, an electromagnetic reversing valve with a rated pressure of 21MPa and 31.5MPa has an oil return port.

The advantages of superimposed hydraulically controlled check valves are mainly reflected in the following aspects: compact structure and space saving: superimposed hydraulically controlled check valves adopt superimposed structure, and multiple valve spools can be stacked together to form a whole without the need for pipe connections, thereby reducing the space required by the system. This compact design makes the hydraulic system smaller and lighter, making it easier to install and layout. Easy to install and easy to maintain: The installation process of the superimposed hydraulically controlled check valve is relatively simple and the assembly cycle is short. Since the pipeless connection between the components is achieved, leakage, vibration and noise caused by oil pipes, pipe fittings, etc. is eliminated, making the system maintenance and maintenance easier. Stable performance and high reliability: the superimposed hydraulic control check valve has the characteristics of small leakage, low vibration and low noise, which can ensure the stable operation of the hydraulic system. At the same time, its high-precision grinding technology and high-quality sealing materials also improve the sealing and accuracy of the valve, further enhancing the reliability of the system

The choice of single-head solenoid reversing valve and double-head solenoid reversing valve must be determined based on the specific application scenario. Both have their own advantages and disadvantages, and it is impossible to generalize which one is better. 1. Characteristics and applicable scenario structure and function of single-head solenoid reversing valve. Single outlet design: There is only one fluid outlet, suitable for one-way flow control. Single function: Only the fluid can enter or discharge from one direction, and cannot be switched in two directions. Advantages and simple structure: small size, low cost, convenient installation and maintenance. Fast response speed: The solenoid force directly drives the valve core and moves quickly. Applicable scenarios for one-way flow control: such as one-way oil circuit switching in hydraulic systems and one-way air flow control in pneumatic systems. Cost-sensitive projects: scenarios where equipment costs are strictly limited. 2. Characteristics and applicable scenario structure and function of double-head solenoid reversing valve. Double outlet design: It has two fluid outlets, which can realize bidirectional flow control. Diverse functions: It can control the forward flow of fluid and reverse flow, flexible