How to use the superimposed relief valve - Zhejiang Tengke ...

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

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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.

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Characteristic Features

POOCCA Rexroth pressure relief valves are designed to protect hydraulic systems from overpressure. Here are some advantages and characteristics of Rexroth pressure relief valves:

Advantages:

1. Accurate pressure control: Rexroth pressure relief valves provide accurate pressure control, ensuring that the pressure within the hydraulic system remains within safe limits.

2. High flow capacity: These valves have a high flow capacity, which allows for the efficient and effective flow of hydraulic fluid through the system.

3. Durable design: Rexroth pressure relief valves are built to last, with a durable design that can withstand even the harshest operating conditions.

4. Easy installation: These valves are designed for easy installation, with simple connections and mounting options that make them easy to integrate into existing hydraulic systems.

Characteristics:

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1. Adjustable pressure settings: Rexroth pressure relief valves can be adjusted to suit specific pressure requirements, making them customizable to the needs of the application.

2. Direct-acting or pilot-operated design: These valves can be either direct-acting or pilot-operated, depending on the application and specific requirements.

3. High-pressure ratings: Rexroth pressure relief valves are designed to handle high pressure ratings, making them suitable for use in heavy-duty applications.

4. Various port sizes: These valves come in a range of port sizes to suit different hydraulic systems and flow requirements.

5. Different mounting options: Rexroth pressure relief valves can be mounted in different orientations and configurations, providing flexibility in installation and use.

FAQ     

1. What is a pressure relief ZDB valve?

The pressure relief ZDB valve is a type of control valve used in hydraulic systems to regulate the pressure of fluids. It is designed to prevent pressure build-up in the system by diverting excess fluid flow back to the reservoir.

2. What are the benefits of using a pressure relief ZDB valve?

The use of a pressure relief ZDB valve can help to protect hydraulic components from damage caused by excess pressure. It can also improve the efficiency and performance of hydraulic systems by maintaining a consistent pressure level.

3. How does the pressure relief ZDB valve work?

The pressure relief ZDB valve works by sensing changes in pressure within the hydraulic system. When the pressure exceeds the set limit, the valve opens, allowing excess fluid to flow back to the reservoir, relieving the pressure.

4. What are the key features of the pressure relief ZDB valve?

The key features of the pressure relief ZDB valve include a compact design, low pressure drop, precise pressure control, and low hysteresis.

5. How do I choose the right pressure relief ZDB valve for my application?

When choosing a pressure relief ZDB valve, consider the maximum pressure and flow rate of your hydraulic system, as well as the required pressure set point and accuracy. Different valve sizes and pressure ranges are available to suit different applications.

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