Integral DBB Valve
Integral DBB Valve
Introduction
Integral Double Block & Bleed (DBB) Valve are engineered to offer compact, reliable, and efficient isolation for critical process systems. This innovative design integrates two block valves and a bleed valve into a single compact unit, eliminating the need for multiple valve installations. The DBB configuration ensures secure double isolation and safe venting of trapped pressure or fluids, making it ideal for maintenance, sampling, or pressure release operations.
These valves are extensively used in industries such as oil and gas, chemical processing, and power generation, where space constraints and safety are top priorities. By reducing the number of connections and potential leak points, Integral DBB Valves enhance system integrity, reduce installation costs, and improve operational efficiency.
Key Features
Dual isolation with single-body compact design
Reduced weight and installation space compared to conventional assemblies
Suitable for high-pressure applications up to 10,000 PSI
Available in flanged, threaded, and welded ends
Fire-safe, anti-static design compliant with API & ASME standards
NACE MR0175 compliant for sour service
Various materials: SS316, Duplex, Monel, Inconel, etc.
Technical Specifications (Basic)
| Parameter | Value |
|---|---|
| Type | DBB Bleed Valve |
| Bore Size | 9.5mm to 25mm (Options Available) |
| Pressure | Up to 10,000 PSI |
| Connections | Flanged / Threaded |
| Body Material | SS316 / Duplex / Other on Request |
Integral Block & Bleed Valve
- Ball and globe type needle valves
- Flanged and threaded conncetions
- Integrally forged body
Monoflange
- Globe type needle valves
- Flanged and threaded conncetions
- Slimline integrally forged body
Root valve
- Ball and globe type needle valves
- Weld or threaded connections
- Direct connection to the vessel
Design & Testing Standards
- YDB Valves are designed and manufactured as per ASME B 16.34, API 6D & BS 5351/BS EN ISO 17292. These standards cover pressure – Temperature ratings, minmum shell thickness, bore diameter for each size/ class.
- Valve body and trim can be offered as per NACE MR 01-75 compliant.
- Castings inspection as per MSS-SP 53, 54, 55, 59, 93 & 94
- Actuator mounting pad on the valve as per ISO 5211
- Other applicable standards:
- Valve Bore: API 6D
- Face to Face: ASME B 16.10/API 6D
- Flange dimensions: ASME B16.5/B16.47 / MSS SP 44
- Butt weld valve ends: ASME B 16.25/B 31.3/B 31.4/B 31.8
- Pressure tests: API 6D/API 6FA/BS EN 12266-1 & 2
- Fire safe test: API 607/ API 6FA/BS 6755 Part II/ BS EN ISO 10497
- Drain / Vent/ Bypass: MSS SP 46/API 6D
Applications
The Double Block & Bleed Valve ensures safe isolation and controlled pressure venting in high-pressure pipelines and offshore platforms, enhancing safety and operational efficiency.
Used in chemical plants for handling hazardous fluids, the Double Block & Bleed Valve provides secure isolation and safe venting, reducing the risk of leaks and contamination.
In power plants, the Double Block & Bleed Valve ensures secure isolation of steam or cooling water systems and allows safe depressurization during maintenance.
The Double Block & Bleed Valve is used in petrochemical facilities for isolating and venting pressurized fluids or gases, ensuring system integrity and worker safety.
In marine applications, the Double Block & Bleed Valve is critical for isolating and venting fluid and gas systems aboard ships, ensuring operational reliability and safety.
Custom-engineered valve solutions for industrial fluid control.
Related Products
DBB Bleed Valve
Compact valve with two isolation ball/needle valves and a central bleed valve—ideal for direct mounting and small footprint applications.
Injection Quill DBB Valve
Designed for injecting chemicals into the process line with safety isolation and backflow prevention. Suitable for high-pressure pipelines.
Monoflange Valve
Single flange-mounted solution with multiple isolation stages. Commonly used for pressure instrumentation, measurement, and sampling.
