How a Double Block and Bleed Valve Works

How to choose a Double Block and Bleed Valve: https://www.budenberg.co.uk/blog/what...

Order your Double Block and Bleed Valves from Budenberg Gauge: https://www.budenberg.co.uk/store/val...

The real meaning or use for a Double Block and Bleed valve (DBB) is in isolating the flow of media in a pipe using three valves.

A DBB is made up of two block valves and one bleed valve. Depending on the process that the DBB is to be used in such as temperature and pressure, the assembly and materials will differ. If the valve is to be used in a noncritical process then the use of a Single Block and Bleed (SBB) valve may be used.

Achieving Positive Isolation

Most Double Block and Bleed valves will be used when performing maintenance, repair or closing down of a section of piping. To achieve positive isolation both block valves are closed. When both block valves are closed the media flow will have stopped. The side which has been closed down can then be drained for safe access and any media trapped in-between the block valves can be drained using the bleed valve.

0:00 Intro
0:14 How a double block and bleed valve works.
0:35 Configurations, valve types and key parts
1:24 Difference between double block and single block.and bleed valves
1:50 Achieving positive Isolation
2:25 Industries that DBB valves are used in.
2:43 Key benefits of a Double Block and Bleed Valve
3:22 Key Benefits of Budenberg Double Block and Bleed Valves