Description
Double Block & Bleed (DBB) Plug Valve Manufacturer & Exporter in India
FlowBiz Exports manufactures high-performance Double Block & Bleed (DBB) Plug Valves designed for critical isolation, high-integrity shut-off, and continuous line safety in oil, gas, and chemical pipelines. Engineered to provide two independent sealing surfaces in a single valve body with a bleed cavity in between, our DBB plug valves eliminate the need for traditional two-valve systems, significantly saving installation space, weight, and piping costs.
Key Performance Features & Design
- Positive Double Isolation (DBB): Provides simultaneous, bubble-tight sealing on both upstream and downstream ports while enabling safe draining or venting of the body cavity.
- Non-Lubricated / Lift & Turn Design: Features resilient slip seals or sleeves that retract during rotation, drastically reducing torque and preventing seat wear during operation.
- Inline Verifiable Shut-Off: Allows maintenance engineers to verify total seat integrity by bleeding off cavity pressure without interrupting pipeline flow.
- Fire-Safe & Anti-Static Construction: Built to withstand high pressure differential and severe thermal fluctuations while maintaining total structural and seat safety.
Technical Specifications & Standards
Specification Parameter | Standard Options & Manufacturing Range |
Size Range | 2" (DN50) to 24" (DN600) |
Pressure Class | ASME Class 150, Class 300, Class 600, Class 900, Class 1500 |
Body Materials | Cast Steel (WCB, LCB), Forged Steel (A105, LF2), Stainless Steel (SS304, SS316, SS316L), Duplex & Super Duplex Steel |
Plug & Slip Coating | SS316, Nitrided, Electroless Nickel Plating (ENP), Stellite |
Seal & Seat Material | Viton, Fluorosilicone, PTFE, PEEK, High-Temp Elastomers |
End Connections | Flanged Ends (ASME B16.5 / B16.47), Butt Weld (BW) |
Design & Testing Standards | Designed to API 6D / ASME B16.34; Tested to API 598 / API 6D; Fire-Safe to API 607 |
Target Industries & Applications
FlowBiz Double Block & Bleed Plug Valves are extensively deployed in oil and gas metering skids, tank farm isolation manifolds, aviation fuel loading systems, refinery crude distribution, and multi-product pipeline transfer networks.
Contact FlowBiz Exports today to request technical datasheets, GA drawings, or a commercial quotation for your DBB plug valve requirements.