Emergency detection of solenoid valve 34BO-H6B-T to troubleshoot valve core stuck problem

In the daily operation of industrial equipment, the hydraulic reversing solenoid valve 34BO-H6B-T is a key component for controlling the direction of the fluid. When the equipment is abnormal, quickly determining the root cause of the fault is the key to ensuring production efficiency. Among them, valve core stuck is one of the common faults of this type of solenoid valve. Faced with emergencies, on-site technicians often need to use simple tools to quickly troubleshoot the problem. This article takes the hydraulic reversing solenoid valve 34BO-H6B-T as an example, combined with actual operating experience, to explain in detail how to use a screwdriver to press the valve body emergency button to determine whether the valve core is stuck, and share relevant precautions.

I. Understand the manifestations and effects of valve core stuck

The working principle of the hydraulic directional solenoid valve 34BO-H6B-T is to control the movement of the valve core by the on-off power of the electromagnetic coil, thereby switching the hydraulic oil circuit. If the valve core is stuck due to impurities, wear or insufficient lubrication, the solenoid valve will not be able to change direction normally, resulting in equipment failure. At this time, if the fault location can be quickly confirmed, the economic losses caused by long-term downtime can be avoided.

In actual maintenance, many technicians have found that by manually pressing the emergency button on the valve body, the movement state of the valve core can be intuitively felt. This method does not require the removal of the valve body, is easy to operate, and is suitable for rapid on-site detection.

II. Key points for operating the screwdriver to press the emergency button

The valve body of the hydraulic reversing solenoid valve 34BO-H6B-T is usually equipped with a manual emergency button for manual intervention in an emergency. The following points should be noted during operation:

- Preparation

Ensure that the equipment is in a power-off state and release the pressure in the hydraulic system to avoid accidental start-up or high-pressure oil spraying during operation.

Prepare a suitable screwdriver (such as a flat or cross type), as well as auxiliary tools such as a cleaning cloth and lubricating oil.

- Locate the emergency button

The emergency button is usually located on the side or top of the valve body and is marked as “Manual” or “Emergency”. Before operation, confirm the position of the button and check whether there are signs of rust or wear on its surface. If the button surface is severely damaged, it may affect the test results.

- Top pressure operation steps

Aim the screwdriver vertically at the emergency button and press it slowly. Pay attention to the strength during operation to avoid excessive force that may cause deformation of the valve body.

Observe the resistance change of the button: if the button is pressed smoothly and rebounds, it means that the valve core is not stuck; if the resistance is too large or it cannot be pressed at all, there may be a stuck problem.

Repeat the operation 2-3 times and record the resistance difference each time. If the resistance gradually increases or is accompanied by abnormal noise, it may indicate abnormal friction between the valve core and the valve sleeve.

- Combined with other detection methods

If the top pressure operation fails to clearly determine the fault, further inspection can be carried out:

Use a multimeter to measure the power supply voltage of the electromagnetic coil to eliminate undervoltage or short circuit problems.

After disassembling the valve body, check the internal cleanliness, clean impurities and lubricate the valve core surface.

III. Common causes and treatment suggestions for valve core stuck

In actual applications, the stuck valve core of the hydraulic reversing solenoid valve 34BO-H6B-T is often related to the following factors:

• Impurity intrusion: Metal particles or dust in the hydraulic oil may block the valve core channel. It is recommended to replace the oil regularly and install a filter at the oil inlet.
• Insufficient lubrication: The friction between the valve core and the valve sleeve is aggravated by poor lubrication. Special lubricating oil should be applied to the surface of the valve core, and the lubrication status should be checked regularly.
• Aging of seals: After the rubber seal ring hardens, it may be too tight with the valve core. Replace the sealing material with high temperature and corrosion resistance, and ensure that the installation is not skewed.
• Mechanical deformation: The valve body is deformed due to improper installation or external force impact, and the position needs to be recalibrated to avoid over-tightening the connecting bolts.

Although the valve core stuck problem of hydraulic reversing solenoid valve 34BO-H6B-T is common, the root cause of the fault can be quickly located by a simple detection method of pressing the emergency button with a screwdriver. In industrial equipment maintenance, mastering such practical skills can not only improve fault response efficiency, but also reduce downtime losses for enterprises.

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E-mail: sales@yoyik.com
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Whatsapp: +86-13618105229

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