High-Integrity Double Ball DBB Trunnion Mounted Valve

SLVCN High-Integrity Twin-Ball Double Block and Bleed Ball Valve is designed for critical pipeline and process isolation applications where reliable shut-off, cavity pressure release and leakage verification are required. As an integrated DBB ball valve, it is commonly used in oil & gas, natural gas, refining, petrochemical and other severe service pipeline systems.

The valve integrates two independent ball closures and an intermediate bleed / vent connection within one compact body. Compared with a traditional assembly using two separate block valves and one bleed valve, the integrated DBB design helps reduce installation space, overall weight, connection points and potential external leak paths.

When both ball closures are closed, the cavity between the two balls can be vented, drained or monitored through the bleed connection. This allows operators to verify isolation performance before maintenance, sampling, instrument isolation or process line intervention.

Depending on valve size, pressure class and working conditions, the valve can be supplied with floating or trunnion mounted ball design. Soft seated and metal seated configurations are available for different pressure, temperature and media requirements.

Body material, ball material, seat material, pressure class, end connection, bore type, bleed arrangement and operation method can be customized according to project specifications. Fire-safe design, anti-static device, anti-blowout stem, NACE MR0175 / ISO 15156 compliance and actuator operation are available upon request.

This valve is suitable for oil & gas transmission, natural gas pipelines, refinery units, petrochemical plants, chemical processing lines, pipeline stations, metering systems, sampling systems and other critical isolation applications.