Double Block & Bleed Valves

Double Block & Bleed (DBB) valves are designed to provide two independent seals and a means to drain or vent the valve chamber, ensuring safe isolation of the pipeline or system for maintenance and preventing leakage.

Grades:

1. Carbon Steel:
   • A105, A350 LF2: Suitable for general service and high-pressure applications.
2. Stainless Steel:
   • 304, 316: Offers resistance to corrosion and high-temperature performance.
3. Alloy Steel:
   • A182 F11, F22: For high-pressure and high-temperature conditions.

Sizes:

• Diameter: Typically ranges from 2 inches to 12 inches

Applications:

1. Oil and Gas: Provides enhanced safety by allowing complete isolation and bleed-off, crucial for pipeline maintenance and repair.
2. Chemical Processing: Ensures reliable isolation and safe maintenance of chemical systems.
3. Petrochemical Industries: Ideal for applications requiring double isolation and bleed capabilities to handle high-pressure and corrosive environments.

These valves are essential in systems where absolute isolation and safety are required, providing a secure way to perform maintenance and inspections.