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Valve Selection Principles and Selection Points
- DELCO Valve
In industrial production and equipment maintenance, valves are key components. Choosing the right valve can not only improve production efficiency, but also extend the service life of the equipment. In this article, DELCO Valve will discuss in detail the principles of valve selection to help you make the best choice in actual operation.
Valve Selection Principles
- Reliability: Industrial production requires continuous, smooth, long-cycle operation. Therefore, the valves used should have high reliability and a large safety coefficient; to meet the requirements of long-cycle operation of the device;
- Applicability: the valve should meet the operating medium, pressure, temperature and use needs, which is also the most basic requirements of the valve selection. For example, the need for valves to prevent reflux of media during operation, should be used check valves; the need for automatic discharge of steam piping and equipment in the continuous generation of condensate, air and other non-condensable gases, while preventing the escape of steam, should be used to select the trap. In addition, for corrosive media, corrosion-resistant materials should be used such as valve body.
- Operability: After the valve is installed, the operator should be able to correctly identify the direction of the valve, the opening degree sign, indicating signals, to facilitate timely and decisive handling of various emergency failures. At the same time, the structure of the selected valve type should be as simple as possible, easy installation and maintenance.
- Economy: In order to meet the applicability, reliability and operability requirements on the basis of the selection of valves should give full consideration to the economy. In the same function and performance under the premise of selecting the most cost-effective valves will help reduce the overall cost of equipment, and enhance the operational efficiency of the system.
Valve Selection Points
- Clearly the purpose of the valve: first of all, we must understand the specific use of the valve in the equipment, consider the nature of the medium, working pressure, temperature and control methods and other factors. For example, high-temperature and high-pressure environment requires high-temperature and high-pressure resistant material valves.
- Correctly select the type of valve: according to the process and operational requirements, select the appropriate type of valve. For example, globe valves are suitable for frequent operation and flow regulation, and ball valves are suitable for fast opening and closing and low fluid resistance. When determining the type of valve, the most suitable type of valve should be selected according to the actual working conditions and operational requirements to ensure the smooth running of the production process.
- Determine the end connection of the valve: In valve selection, the end connection is also a crucial consideration. Common connection methods include threaded connection, flange connection and welded connection. Threaded connection is suitable for small diameter valves, flange connection is easy to install and disassemble but the price is higher, welded connection is suitable for harsh conditions but difficult to disassemble.
- Valve material selection: choose the valve material when considering the physical properties of the medium, chemical properties and cleanliness, follow the relevant regulations. Reasonable choice of material can improve valve life and performance.
Summarize
Valve selection is a comprehensive consideration of the working conditions, valve type, connection and material selection process. Only a comprehensive grasp of these points, in order to select the most suitable valve to ensure the safe, stable and efficient operation of equipment and process systems. In the actual selection process, designers should be based on specific working conditions and needs, reasonable selection of valves, in order to achieve the best use and economic benefits.
If you have questions about valves or want to get a quote, please feel free to contact DELCO, we will reply within 6 hours. Phone +86 159 8960 2972, WhatsApp +86 159 8960 2972 or email [email protected].
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