How to use the superimposed relief valve

The usage methods of superimposed relief valves mainly involve installation, pressure adjustment and daily maintenance. The following is a detailed introduction:

Install

The superimposed relief valve is usually installed between the reversing valve and the bottom plate. The 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 regulation

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.

Daily maintenance

Regular inspection: Regularly check the working status of the superimposed relief valve, including whether the pressure is stable, whether there is any leakage, etc. For example, the system pressure can be monitored through a pressure gauge. If the pressure fluctuates greatly or fails to reach the set value, the overflow valve may need to be inspected and adjusted.

Cleaning and maintenance: Keep the overflow valve and its surrounding environment clean to prevent impurities from entering the valve and affecting the performance of the valve. For example, regularly clean the dust and oil on the valve body surface, check the cleanliness of the oil, and replace the hydraulic oil and filter element if necessary.

Replace it in time: If you find that the relief valve is often blocked or damaged due to the valve core, you should replace it in time. For example, when the relief valve experiences frequent overflow and unregulated pressure, it may be caused by wear or blockage of the valve core, and a new relief valve needs to be replaced.