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18
December
Application And Reliability Analysis of DBB Ball Valve in Petroleum Refining

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

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29
November
Regarding DBB Ball Valves, J-VALVES, A Manufacturer From China, Specializes in Production.

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

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22
November
CE/API 6D Dual-Certified DBB Ball Valves: Key Points of Compliance Design for Meeting The Requirements of European And North American Markets

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.

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07
November
What Are The Differences in Design between DBB Ball Valves And DIB Ball Valves?

DBB (Double Block and Bleed) ball valves and DIB (Double Isolation and Bleed) ball valves are two common types of industrial ball valves. They have significant differences in sealing principles, seat structures, and pressure relief mechanisms.

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What You Know About Us

December 18, 2025

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

November 29, 2025

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

November 22, 2025

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.

November 07, 2025

DBB (Double Block and Bleed) ball valves and DIB (Double Isolation and Bleed) ball valves are two common types of industrial ball valves. They have significant differences in sealing principles, seat structures, and pressure relief mechanisms.

November 03, 2025

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

November 03, 2025

Since the brand was founded in 2009, J-VALVES Cryogenic DBB Ball Valve, with its outstanding design and manufacturing technology, has continuously provided global industrial customers with safe and efficient cryogenic double block and bleed (DBB) fluid control solutions, becoming a reliable partner for fluid management in extreme environments.

October 30, 2025

In the industrial sector, the selection of valves is crucial, as it directly affects the efficiency, safety, and maintenance costs of a system. Since 2009, J-VALVES has been committed to providing high-quality industrial valve solutions, among which the DBB (Double Block and Bleed) ball valve is one

August 12, 2025

A large - scale petroleum company in Malaysia, for one of its important petroleum refining, transportation, and storage projects, faced strict valve equipment selection. The project covers multiple links from crude oil reception, refining to petroleum product storage and long - distance transportation, and has extremely high requirements for the performance, reliability, and safety of valves.

May 10, 2025

In oil and gas pipelines, DBB ball valves are like "gatekeepers" controlling the flow of media. Especially within the wide pressure range from 150LB to 2500LB, whether they can stably withstand pressure and comply with international standards is directly related to the safety of the pipelines. Today, let's talk about how to conduct a comprehensive "check-up" for ball valves through pressure resistance testing and verification against the ASME B16.34 standard.

May 10, 2025

In oil and gas pipelines, the selection of DBB ball valves is of crucial importance, and full bore and reduced bore designs are two common options. They each have their own characteristics in terms of flow performance and cost. How can we balance these two aspects to make a proper selection? The following will discuss this in detail.

May 09, 2025

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.

March 13, 2025

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

March 04, 2025

Understanding Stainless Steel 304Properties of Stainless Steel 304Stainless steel 304 is a versatile and widely used austenitic stainless steel known for its excellent corrosion resistance, formability, and toughness. Key properties include:• Corrosion Resistance: Stainless steel 304 is highly resis

February 09, 2023


In the industrial field, BALL VALVES are widely used, and different standards have different requirements for their designs. API 6D and ASME B16.34 are two commonly used relevant standards. Understanding the differences in the design of DBB (DOUBLE BLOCK AND BLEED) BALL VALVES under these two standards is crucial for correct selection. The following will provide a detailed comparison and a selection guide.

Manufacturer and supplier of industrial valves, including Floating Ball Valves, Trunnion Ball Valves, Flanged Gate Valves, Welded Gate Valves, High Pressure Gate Valves, Globe Valves, Swing Check Valves, Double Disc Wafer Check Valves, Y Strainers , etc. For more information, please send us your email .

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