High Pressure Double Block and Bleed (DBB) Valve

Corrosion
Resistant

Leak Tight
Sealing

Automated
Operation

Low Maintenance
Long Life

Alis Valves offers High Pressure Double Block and Bleed Valve Manufacturer in India engineered for demanding applications where safety and reliability are critical. These valves provide two independent sealing barriers along with a bleed port to safely release trapped pressure. Built with robust materials and precision engineering, high-pressure DBB valves are widely used in oil & gas, offshore, and high-pressure processing systems.

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Product Specifications and Overview

Size Range

DN 15 to DN 250

Pressure Rating

Class 600 to 2500

Body Material

Forged Carbon Steel / Alloy Steel / Stainless Steel

Seat Material

PTFE / PEEK / Metal Seated

End Connection

Flanged / Butt Weld

Operation

Lever / Gear / Pneumatic / Electric

Temperature Range

-46°C to 450°C (Depends on Material)

Standards

API 6D / ASME B16.34

Media

Oil, Gas, Hydrocarbons, Chemicals

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Industries Served

Cement

Engineered valve solutions tailored for critical Cement operating processes.

Chemical

Engineered valve solutions tailored for critical Chemical operating processes.

Data centres

Engineered valve solutions tailored for critical Data centres operating processes.

Fertilizer

Engineered valve solutions tailored for critical Fertilizer operating processes.

Applications

Ammonia

High-performance flow automation engineered for Ammonia operations.

CO₂

High-performance flow automation engineered for CO₂ operations.

Compressed Air

High-performance flow automation engineered for Compressed Air operations.

Cryogenic

High-performance flow automation engineered for Cryogenic operations.

Frequently Ask Questions

What Is a High Pressure Double Block and Bleed Valve?

A High Pressure Double Block and Bleed (DBB) Valve is an isolation valve arrangement designed to provide two independent isolation barriers and an intermediate bleed/vent point in high-pressure pipeline and process systems.

What Is the Difference Between DBB Valve and Two Separate Valves?

Two separate isolation valves can provide double isolation when combined with a suitable bleed arrangement. A DBB valve integrates the isolation arrangement into a single compact valve assembly, potentially reducing: Installation space Number of connections Potential external leakage points Piping complexity

How Does a High Pressure DBB Valve Work?

A typical sequence is: Close the upstream isolation barrier. Close the downstream isolation barrier. The section between them becomes isolated. Open the intermediate bleed/vent. Release trapped pressure. Verify that the isolation barriers are maintaining the required isolation. The actual operating procedure should always follow the manufacturer's instructions and the plant's isolation procedure.

Who Is a High Pressure Double Block and Bleed Valve Manufacturer in India?

Alis Valves is a High Pressure Double Block and Bleed Valve manufacturer and supplier in India, offering DBB valve solutions for oil & gas, refinery, petrochemical, natural gas, chemical and high-pressure process applications. Depending on the required service, DBB valves can be configured with suitable ball design, body material, seat material, pressure class and manual or automated operation.