18061659285
Severe Service Metal Seated High-Integrity DBB Ball Valve for Critical Isolation
Product Parameters
Valve Type |
Trunnion Mounted Ball Valve |
Design |
Double Block and Bleed (DBB) |
Sealing Type |
Metal Seated (Hard Sealing) |
Operation |
Manual Gear (Electric and Pneumatic Actuation Options) |
Size Range |
NPS 2" – 48" (Customizable) |
Pressure Rating |
ASME Class 300 – Class 2500 |
Body Material |
A105 / LF2 / F11 / F22 / F316 / F51 / F53 (Optional) |
Ball Material |
F316 / F304 / Alloy Steel / Surface Hardened |
Seat Material |
Stainless Steel with Hard Facing (Stellite / Cr-based) |
End Connection |
Flanged (ASME B16.5 / ASME B16.47) |
Design Standards |
Designed in accordance with API 6D, ASME B16.34, BS 5351 |
Fire-Safe Design |
Designed in accordance with API 607 / API 6FA |
Brand |
SLVCN |
Key Features
Heavy-Duty Forged Body with Thick Flanged, Multi-Bolt Design
Forged valve body combined with thick flanges and multi-bolt connections, providing superior pressure containment, load distribution, and structural rigidity for severe service.
Trunnion-Mounted Ball Design for Severe Service
Fixed ball supported by upper and lower trunnions to minimize ball deflection, ensuring stable operation and reliable sealing under ultra-high pressure DBB service.
True DBB Configuration with Controlled Sealing Loads
Dual sealing seats provide complete upstream and downstream isolation, with controlled cavity pressure relief to enhance pipeline safety.
Proven Metal-Seated Sealing System
Metal-to-metal sealing technology engineered for high temperature, high pressure, and abrasive or corrosive media, delivering long-term sealing integrity.
Heavy-Duty Gear-Operated Mechanism for Large Sizes
Worm gear operation ensures controlled torque output and smooth, stable operation for large-bore, high-pressure applications.
Fire-Safe, Anti-Static & Anti-Blowout Safety Design
Integrated safety features designed in accordance with fire-safe and anti-static requirements, ensuring operational integrity in hazardous service conditions.
Product Details
SLVCN Severe Service Metal Seated High-Integrity DBB Ball Valve is engineered for critical isolation in high-pressure pipeline systems. Featuring a true Double Block and Bleed (DBB) configuration, trunnion-mounted ball design, and a heavy-duty forged body with thick flanged, multi-bolt connections, it delivers reliable double isolation, controlled cavity pressure relief, and structural integrity under severe service conditions. Metal-to-metal sealing ensures stable shut-off performance in high temperature, high pressure, and abrasive or corrosive media.
Designed for demanding applications, this DBB ball valve is widely used in Oil & Gas, Petrochemical, and severe process industries, where safety and reliability are critical. The heavy-duty gear-operated mechanism provides smooth, controlled operation for large-bore, high-pressure service, while integrated fire-safe, anti-static, and anti-blowout features enhance protection in hazardous environments.
To meet specific operating conditions and project requirements, the valve can be customized in pressure ratings, materials, sealing configurations, and flanged standards. This flexibility allows precise adaptation to different media, temperature ranges, and pipeline specifications, making it a dependable solution for severe service and critical isolation applications.
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