Valve Selection Guide

As an important component in the pipeline system, the selection of valves is crucial for ensuring the safe and stable operation of the system. The following are the key factors to be considered when selecting valves:

1. The properties of the working medium

When selecting valves, the properties of the working medium should be considered first, including acidity and alkalinity, temperature, pressure, etc. Different media have different requirements for the materials and types of valves. For example, for highly toxic, flammable, explosive, and corrosive media, valves with good sealing performance and pressure resistance need to be selected.

2. Working conditions

Working conditions include temperature, pressure, medium flow rate, etc. These factors directly affect the selection of valve structure and type. For example, in high-temperature and high-pressure environments, valves that can withstand the corresponding conditions, such as high-pressure valves or ultra-high-pressure valves, need to be selected.

3. Usage requirements

The usage requirements involve the working modes of valves, such as manual, electric, pneumatic, etc. The selection should be determined according to the actual operation requirements.

4. Safety requirements

Safety requirements include safety levels such as the sealing performance and pressure resistance of valves. Especially in industries such as petrochemicals, valve failures may lead to serious safety accidents. Therefore, special attention should be paid to the safety performance of valves when making a selection.

5. Economy

Economic considerations include the selection of valve brands and models, as well as the costs of maintenance and replacement. Choosing valves with high cost – effectiveness can reduce costs while ensuring quality.

6. Valve type selection

There is a wide variety of valve types, including gate valves, globe valves, throttle valves, plug valves, ball valves, diaphragm control valves, etc. Each type of valve has its specific application scenarios and advantages. For example, ball valves are suitable for shut – off applications, while needle valves are suitable for situations where precise flow control is required.

7. End connection method

The end connection methods of valves include threaded connection, flange connection, and welded end connection, etc. When selecting, it is necessary to decide according to the specific conditions of the pipeline system. For example, threaded connection is suitable for valves with a small nominal diameter, while flange connection is suitable for pipeline connections of various calibers and pressures.

8. Valve material selection

The selection of valve materials needs to consider the physical properties (temperature, pressure) and the chemical properties (corrosiveness) of the working medium. In addition, the cleanliness of the medium (whether there are solid particles) also needs to be considered.

9. Flow rate and pressure level

When selecting valves, the flow rate and pressure level of the fluid passing through the valves also need to be considered. The appropriate valves can be selected by referring to materials such as valve product catalogs and valve product samples.

10. Brand and model selection

Choosing valves from well – known brands can guarantee the quality and after – sales service. For example, NEWAY valves, China National Nuclear Corporation Suzhou Nuclear Power Institute Valve Co., Ltd., Jiangyi, Beijing Brand BVMC, KF Kai Fa Valve, Yaozi, SANHUA, DunAn, CHAODA, Shanghai Kaiweixi Valve Co., Ltd., etc. are all popular valve brands in the market.

In conclusion, when selecting valves, it is necessary to comprehensively consider the above factors, combine specific application scenarios and technical requirements, and choose the most suitable valve type and brand.