18061659285
Forged Double Ball DBB Valve with Dual Gear Operation
Product Parameters
| Valve Type | Forged Trunnion Mounted Twin Ball DBB Valve |
| Size | 2" – 36" (DN50 – DN900), Larger sizes available upon request |
| Pressure Rating | Class 150 – 900, Higher pressure ratings available upon request |
| Temperature Service | Soft Seated: -46°C ~ +200°C; Metal Seated: Up to +425°C |
| Structure | True Double Block and Bleed (DBB) Design |
| Body Material | Forged Carbon Steel / Low Temperature Steel / Stainless Steel |
| Seat Material | PTFE / RPTFE / PEEK / Metal Seated |
| Connection | Flanged RF / RTJ |
| Operation | Manual / Electric / Pneumatic / Hydraulic |
| Safety Design | Fire Safe (according to API 607 / API 6FA), Anti-static, Blowout-proof Stem |
| Applications | Oil & gas transmission, petrochemical plants, pipeline isolation |
| Brand | SLVCN |
Key Features
True Double Block and Bleed Isolation
Two independent balls provide positive dual isolation, replacing traditional two-valve assemblies in one compact body.
Integrated Cavity Vent for Online Seal Verification
Allows pressure monitoring and safe cavity discharge to confirm seal integrity during operation.
Heavy-Duty Forged Trunnion Construction
Designed for high pressure service with fire-safe, anti-static, and blowout-proof safety protection.
Automation-Ready and Project Customizable
ISO 5211 interface with flexible materials, pressure ratings, and sizes for critical oil & gas applications.
Product Details
SLVCN forged twin ball DBB (Double Block and Bleed) ball valve is a high-integrity isolation solution designed for oil, gas, and petrochemical pipeline systems. The true twin-ball dual sealing structure provides reliable upstream and downstream isolation with zero-leak performance, significantly improving operational safety in critical processes.
The double block and bleed design features two independent sealing barriers and a central cavity bleed port for pressure monitoring and safe discharge during maintenance. The forged trunnion-mounted body ensures high strength, stable operation under high pressure conditions, while reducing operating torque and extending service life. Dual worm gear operation provides smooth and precise manual control in demanding environments.
Widely used in oil and gas transmission, refineries, and chemical processing industries, SLVCN offers customized material, size, and pressure rating solutions. Each valve undergoes strict quality testing to ensure reliable long-term performance.
Decades of Expertise
Tailored Solutions
Rigorous Quality Control
Proven Reliability
How We Ensure Quality & Reliability?
Quality is built into every stage - from raw material to final testing.
CE Certificate
ISO9001 Certificate
Certificate for Credit for Quality Service
Certificate of Observing Contract and Keeping Promise
Trademark Certificate