Double Block & Bleed Valve (DBB Valve) Manufacturer
Quality Industries is a leading Double Block & Bleed Valve (DBB Valve) Manufacturer, Supplier, and Exporter from India. A Double Block & Bleed Valve is specially designed to isolate two separate process lines while allowing venting of the space between the valves. This design provides a crucial safety advantage over traditional block and bleed valves by offering redundant isolation and venting functions. In the event of one valve failure, the second valve continues to isolate the line, significantly reducing the risk of process fluid leakage.
DBB valves are widely used in industries where the safety of personnel and equipment is paramount, including oil and gas, chemical processing, and power generation sectors.
Features of Block & Bleed Valve (DBB Valve)
- • Size :1/4”, 3/8”, ½”
- • End Connections :NPT / BSPP / BSPT
- • Material :316 SS / 316L SS / 304 SS / SS 304 L
- • Maximum working Pressure :6000 PSI / 10000 PSI
- • Maximum working Temperature :110° C
Frequently Asked Questions
A Double Block & Bleed (DBB) valve is a single valve that provides dual isolation and a bleed valve to release any trapped pressure between the two isolation points. It is used to ensure complete isolation for maintenance or safety purposes.
The DBB valve works by having two isolation valves and one bleed valve within a single assembly. The two isolation valves block flow from both sides, while the bleed valve allows for the venting of any pressure or fluid trapped between the isolation points.
DBB valves are used in applications requiring high levels of safety and isolation, such as:
- Oil and gas industry
- Chemical and petrochemical processing
- Power generation
- Refining and pipeline systems
DBB valves are made from various materials, including:
- Stainless steel
- Carbon steel
- Duplex stainless steel
- Alloy materials The material selection depends on the operating environment and the type of fluids or gases being handled.
- Enhanced safety: Provides complete isolation to prevent leaks and ensure safe maintenance.
- Space-saving design: Combines multiple valves into a single compact unit, reducing space requirements.
- Cost-effective: Reduces the need for multiple valves and fittings, saving on installation and maintenance costs.
- Ease of maintenance: Simplifies the process of venting and isolating sections of a pipeline or system.
Yes, DBB valves are designed to handle high-pressure applications, making them suitable for use in critical and high-risk environments.
The company started on a very small scale in 2011 and now has the latest manufacturing and testing facility. The company is located in Gujarat, in the western part of India.
