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Understanding Double Block-and-Bleed (DBB) Ball ValvesDBB ball valves are designed to provide two independent seals (one upstream and one downstream) and a bleed port to vent any trapped fluid between the seals. This design ensures that the valve can safely isolate a section of the pipeline and reli

The Double Ball Floating Ball Valve is an advanced fluid control device, specially suitable for high-pressure, high-temperature and low-temperature environments in industries such as petroleum, natural gas and chemical engineering. With its unique double isolation design and excellent sealing perfor

Application scenarios in petroleum refiningThe petroleum refining process involves high temperatures, high pressures and corrosive media, which places extremely high demands on the performance of valves. The DBB ball valve is suitable for a variety of media, including aviation kerosene, light oil, n

DBB ball valves play a crucial role in industrial pipeline systems. With its unique double block and bleed design, it can ensure that when the valve is closed, the medium in the pipeline is effectively blocked, and at the same time, the residual medium in the valve chamber can be discharged, greatly

Against the backdrop of accelerated integration of the global energy and industrial equipment supply chain, DBB (Double Block and Bleed) ball valves that can simultaneously meet the European CE certification and North American API 6D standard have become a critical choice for oil, natural gas, chemical, LNG, and high-integrity pipeline systems.

Selection Key Points(I) Working Pressure and TemperatureSelect appropriate pressure and temperature ratings according to the working conditions. The pressure ratings of DBB ball valves usually cover 150, 300, 600, etc., with a nominal pressure range of 16-100, and an applicable temperature range fro

I. Application Background of High-Temperature and High-Pressure Double Block and Bleed Flanged Ball ValvesHigh-temperature and high-pressure double block and bleed flanged ball valves are widely used in industries such as petroleum, natural gas, chemical engineering, and electric power. The working

In the industrial field, valves are indispensable components in fluid control systems. There are numerous types of valves, including DBB flanged floating ball valves, gate valves, plug valves, etc. Each type of valve has its unique structure, performance, and applicable scenarios. This article will

In high-pressure pipeline systems, DBB ball valves are widely used, and their anti-blowout valve stem and self-relieving structures play a crucial role in ensuring the overall safety performance. The following will analyze in detail how these two structures enhance the safety performance of DBB ball valves in high-pressure pipelines.

Recently, J-VALVES received good news. The DBB ball valves (Double Block and Bleed Ball Valves) supplied for a key project have successfully passed the customer's acceptance. During this acceptance, the customer formed a professional team to conduct a comprehensive and strict inspection of the produ

Design Standards for DBB Ball ValvesAPI 6DAPI 6D is a widely recognized standard for pipeline valves, particularly those used in the oil and gas industry. It covers various types of valves, including ball valves, and provides detailed requirements for design, materials, testing, and marking. Key asp

Double Block and Bleed (DBB) ball valves are critical components in fluid control systems, designed to provide reliable isolation and safety in various industrial applications. These valves are particularly important in high-pressure and high-temperature environments, such as oil and gas, chemical p