What are the reasons for the damage to the sealing surface of the card sleeve needle valve

2024-01-18

The sealing element of the needle valve plays a role in cutting off and connecting, adjusting, distributing, separating, and mixing media on the channel. Therefore, the sealing surface is often corroded, eroded, and worn by the media, which is easy to damage. The causes of damage to the sealing surface of the card sleeve needle valve can be divided into two types: artificial damage and natural damage. Human damage is caused by factors such as poor design, poor manufacturing, improper material selection, improper installation, poor use, and inadequate maintenance. Natural damage refers to the wear and tear of the valve under normal working conditions, which is caused by inevitable corrosion and erosion of the sealing surface by the medium. The causes of damage to the sealing surface of the card sleeve needle valve are roughly as follows:

Six installation steps for sleeve connectors

2024-01-18

There are many forms of sleeve joints, and the sleeve is a metal ring with a sharp edge at one end of the inner circle. When connecting, first screw the connector body into the interface of the hydraulic component, then place the connecting pipe into the connector body and tighten it, and then use a nut to press the sleeve tightly. During the compression process, the blade of the sleeve cuts into the outer surface of the connecting pipe, forming a sealing surface. At the same time, the sleeve deforms and arches, making contact with the inner conical surface of the joint body to form a spherical sealing surface. Whether the cutting edge of the sleeve can cut into the oil pipe is the key to connection and sealing, otherwise there is a possibility of oil pipe detachment accidents during operation.

Corrosion Protection Requirements for Ferrule Needle Valves

2024-01-18

The card sleeve needle valve is a valve product used for precise flow control, and the valve disc is usually an integrated structure with the valve stem. This article mainly introduces the anti-corrosion aspects that need to be taken into account for the sleeve needle valve.

Leak prevention measures for sleeve joints during use

2024-01-18

During the use of the sleeve joint, there may be leakage, so we can take relevant measures to prevent such phenomena from occurring. The leakage prevention measures are as follows:

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