Introduction to the classification and characteristics of needle valves

Needle valve is an important industrial valve, named after a needle-shaped channel on its valve stem.It is usually used to control the flow and pressure of gas and liquid. It has the advantages of simple structure, convenient operation and high adjustment accuracy.This article will provide an overview of the classification, characteristics, applications and selection of needle valves.

1. Classification of needle valves There are many classification methods for needle valves, and they can be divided into different types according to different classification standards.According to the temperature of the fluid medium, it can be divided into normal temperature needle valves and high temperature needle valves; according to its use, it can be divided into discharge valves, pipeline valves and feed valves; according to its structure, it can be divided into straight-through needle valves, angle valves and so on. Type needle valve and three-way needle valve, etc.

2. Characteristics of needle valves Needle valves have the following characteristics: 1. Simple structure and easy operation.The internal structure of the needle valve is simple and easy to maintain and clean.At the same time, the operation of the needle valve is usually achieved by rotating the valve stem, which is easy to operate.2. High adjustment accuracy.The opening size of the needle valve can be precisely adjusted by rotating the valve stem, allowing precise control of flow and pressure.3. Good sealing performance.The sealing material of the needle valve is usually made of high-quality materials that are resistant to high temperatures and corrosion, and have good sealing performance.4. Strong adaptability.Needle valves are suitable for the transportation and control of various gases and liquids, and can adapt to different working environments and medium characteristics.