Compact Flanged Twin-Ball Double Block and Bleed Ball Valve

SLVCN Compact Flanged Twin-Ball Double Block and Bleed Ball Valve with Dual Independent Stems is designed for process piping, metering skids, instrument isolation, sampling systems, oil & gas, chemical and petrochemical applications where double block and bleed isolation, cavity pressure release and leakage verification are required within a compact installation space.

The valve integrates two independent ball closures and an intermediate bleed / drain connection into one compact body. Compared with a traditional arrangement using two separate block valves and one bleed valve, this integrated DBB valve design helps reduce installation length, flange joints, component quantity 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 supports leakage verification before maintenance, sampling, instrument removal or process line intervention.

Dual independent stems allow separate operation of both ball closures and provide clear isolation logic for operators. Flanged end connections support installation in process piping, metering skids and modular pipeline systems.

For smaller sizes, floating ball design is commonly used. For larger sizes, higher pressure or higher torque service, trunnion mounted design, gear operation, pneumatic actuation or electric actuation can be supplied according to project requirements.

Body material, seat material, pressure class, end connection, operation method, actuator mounting and testing requirements can be customized according to project specifications.