what is dbb valve

Double block and bleed valve 2

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Double block and bleed valve

A double block and bleed valve is a type of valve used in industrial and process applications to isolate a section of a pipeline, while simultaneously providing a mechanism to drain or vent any fluid that may be trapped between the valve’s two sealing surfaces. Essentially, it is two separate valves, usually ball valves, with … Read more

What is DBB valve

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types of valves

A Double Block & Bleed or DBB valve is defined as a valve isolation that consists of two valves in series with an intermediate venting facility. The vent allows personnel to monitor the performance of the primary isolation valve for integrity and prevent an increase of pressure at the secondary isolation valve. Dbb valve are … Read more