Recently, DERVOS successfully completed a local project in Singapore, providing high-quality globe valve products that ensured efficient operation and safety throughout the project. Background The client for this project was a Singapore-based on-site repair and maintenance company, primarily responsible for the daily maintenance and emergency repairs of industrial facilities. Their core requirement was to provide reliable isolation valves for high-pressure steam systems, ensuring efficient and safe operation under high-pressure and high-temperature conditions. Facing issues such as valve aging and high maintenance costs, the customer urgently needed a solution that could provide long-term stable performance. Product Features To meet the customer's strict requirements for steam medium management, we provided a high-pressure steam isolation globe valve. This valve is specifically designed for steam isolation, featuring excellent high-pressure resistance. It is manufactured using precision machining processes to ensure stable sealing and long-lasting performance, even under high-temperature and high-pressure conditions. The valve not only meets strict international standards but also underwent multiple tests at the project site, demonstrating exceptional performance. Project Results The globe valve was successfully installed and put into operation. The client reported that their high-pressure steam system is running smoothly, with more stable and safer operation. The precise control of the valve not only improved the efficiency of maintenance work but also significantly reduced system failures and safety risks. The client highly praised the performance and service of our products, stating that our solution greatly supported their daily maintenance and emergency response capabilities. The success of this project has not only enhanced the client's maintenance efficiency and system safety but also laid a solid foundation for future cooperation between both parties. We are proud to have been involved in this project and look forward to continuing to provide high-quality fluid control solutions for our clients in the future.

In industrial piping systems, valves are critical components for controlling fluid flow, directly impacting the safety and operational efficiency of the system. In certain specific working conditions, a single valve may not be sufficient to meet process requirements and safety standards. Therefore, double valves (also known as a double valve system) are required to enhance the system's reliability and safety. 1. Typical Working Conditions for Double Valve Installation (1) Control of High-Risk Media When handling toxic, hazardous, flammable, explosive, or corrosive media, leaks in the pipeline system can lead to severe safety incidents. To ensure safety, double valves are typically installed in these cases. The double valve system provides dual sealing, so if one valve fails, the other valve can still effectively prevent media leakage, reducing risk. (2) Isolation of Critical Process Flows In certain critical process flows, absolute isolation is required to prevent media mixing or backflow. In such cases, double valves provide a higher level of isolation. The two valves are typically arranged in series, so when the main valve is closed, the second valve continues to provide isolation protection, ensuring complete separation of media inside and outside the system. (3) Convenience for Maintenance and Repair In conditions requiring frequent maintenance or repair, a double valve configuration enhances the safety and efficiency of maintenance operations. For example, when servicing a section of the pipeline, both valves in the series can be closed first. This allows the intermediate section to be emptied or repaired, ensuring no leakage occurs during maintenance and safeguarding personnel and equipment. (4) High-Pressure or High-Temperature Conditions In high-pressure or high-temperature conditions, a single valve may struggle to withstand extreme process conditions over time, leading to potential seal failures or material degradation. Implementing a double valve system not only provides higher safety redundancy but also helps to distribute pressure or temperature loads, thereby extending the lifespan of the valves. (5) Regulatory or Standards Requirements In certain industries or regions, regulations or standards mandate the use of double valve systems to ensure safety. For example, in natural gas transportation or chemical production, some countries' laws require the installation of double valves to prevent medium leakage and environmental contamination. These regulations are primarily based on risk assessments specific to the industry and aim to ensure the safety and reliability of the system. 2. Advantages of a Double Valve System (1) Double Safety Assurance A double valve system provides dual sealing and isolation functions. Even if one valve fails, the other can maintain the integrity of the system, thereby reducing risks. (2) Enhanced System Reliability By distributing the operational load, a double valve configuration can reduce wear and aging ...

In the valve industry, ball valves are widely used in various fluid control systems due to their simple structure, excellent sealing performance, and ease of operation. Based on the connection method, ball valves can be classified into threaded ball valves and flanged ball valves. 1. Connection Method Threaded Ball Valves: Threaded ball valves connect to pipelines using either internal or external threads and are typically used in small-diameter pipeline systems. The advantage of threaded connections lies in their easy installation, compact design, and minimal space requirements, making them especially suitable for confined spaces. Threaded ball valves are commonly used in low and medium-pressure systems and are ideal for fluid control in residential, commercial buildings, and light industrial equipment. Flanged Ball Valves: Flanged ball valves are connected to pipelines through flanges and are suitable for medium to large-diameter pipelines. Flange connections offer higher strength and stability, allowing them to withstand higher pressures and temperatures. As a result, they are commonly used in heavy industries, chemical processing, oil, natural gas, and other applications involving high pressure, high temperature, or corrosive media. Flange connections also facilitate easy disassembly and maintenance but require more installation space. 2. Sealing Performance Threaded Ball Valves: Threaded ball valves typically use soft sealing materials such as polytetrafluoroethylene (PTFE), offering excellent sealing performance, making them suitable for gases, liquids, and other media. However, under high-pressure and high-temperature conditions, threaded connections may pose a risk of leakage, and their sealing effectiveness is generally slightly weaker than that of flanged ball valves in demanding operating conditions. Flanged Ball Valves: Flanged ball valves typically utilize metal or composite seals, providing more reliable sealing performance, especially under high-pressure, high-temperature, or corrosive media conditions. The sealing of flange connections is more stable, effectively preventing leakage. 3. Installation and Maintenance Threaded Ball Valves: Threaded ball valves are easy to install, requiring only tightening to complete the connection, making them ideal for quick installation in small systems. However, once the threaded connection is secured, it may loosen due to thermal expansion and contraction or vibration of the pipeline, leading to potential leakage risks. During maintenance, if a threaded ball valve needs to be replaced, it may affect the pipeline system and even require reconnection of the entire pipeline. Flanged Ball Valves: Flanged ball valve installation requires the use of flanges, bolts, and gaskets, making the installation process more complex. However, flange connections offer higher robustness and reliability. During maintenance, flanged ball valves can be easily disassembled, replaced, or repaired without affecting the ...