Steps and Considerations for Selecting Welded Ball Valves
When choosing a suitable welded
ball valve, we should consider the following key factors.
1. Fluid medium: Understand the properties of the fluid medium to be controlled, including temperature, pressure, viscosity, and corrosiveness. These factors determine the requirements for the material, sealing performance, and corrosion resistance of welded
ball valves.
2. Pressure level: Choose the appropriate pressure level according to the actual application scenario. Common pressure levels include 150 LB, 300 LB, 600 LB, 900 LB, 1500 LB, etc.
3. Diameter: Choose the diameter of a welded ball valve that matches the diameter of the pipeline system to ensure smooth fluid flow.
4. Temperature range: Select the appropriate temperature range according to the actual application scenario, and the temperature range of the welded ball valve should cover the expected working temperature.
5. Flow coefficient: Select appropriate flow coefficient of welding ball valves according to the flow requirements. The flow coefficient is usually expressed as Cv value or K value.
6. Control mode: Select manual, electric, pneumatic and other control modes according to the actual application scenario.
7. Material: Choose a valve body material that is suitable for the properties of the medium and the working environment, such as stainless steel, carbon steel, or alloy steel. Sealing materials usually include polytetrafluoroethylene (PTFE), polypropylene (PP), polyethylene (PE), etc. The temperature, pressure, and corrosiveness of the medium should be considered.
8. Brand and Performance: Choosing a well-known brand of welded ball valve can provide more reliable quality assurance and service. Consider the opening and closing performance, sealing performance, and durability of the valve to ensure its long-term stable operation.
9. Special requirements: If the welded ball valve needs to meet specific safety or environmental standards, or it has special design requirements (such as filtering function), these should also be considered when selecting.
The price of welded ball valves is influenced by various factors, including the valve size, pressure rating, material, control method, and brand. According to the latest search results, the price range for welded ball valves can range from a few hundred yuan to several hundred thousand yuan. For example, the price of some manually operated welded ball valves may range from a few hundred to several thousand yuan, while advanced configuration welded ball valves with electric or pneumatic actuators may cost tens of thousands or even tens of thousands of yuan. The specific price will vary according to the specific needs of users and market conditions.
The service life of welded ball valves is generally related to their quality, materials, design, and usage and maintenance conditions. According to the latest information, welded ball valves have a warranty period of up to 20 years under normal operating and usage conditions. This indicates that welded ball valves can provide long-term reliable operation. However, the actual service life may vary depending on the specific application environment and operating habits. Regular maintenance and inspection can help extend the service life of welded ball valves.
