DBB Ball Valve (Twin Ball) DBB

1.DBB Ball Valve, full denomination Double Block and Bleed Ball Valve, also referred to as double block & double bleed ball valve. It is an integrated multi-purpose valve custom-engineered for industrial piping systems.

2.It integrates two independent shut-off sealing assemblies and an intermediate bleed pressure relief channel within a single valve body, delivering multiple functions including dual-end sealing, cavity venting, double pipeline isolation and valve cavity pressure relief & blowdown.

3.A single DBB ball valve can replace the conventional three-valve assembly consisting of upstream isolation valve + downstream isolation valve + bleed valve, eliminating the complicated layout of multiple valves installed in series.

4.It drastically reduces pipeline flanges, fittings and potential leak points, saves installation space and simplifies operation procedures. It complies with safety isolation specifications for numerous industries with stringent sealing and safety requirements, including oil & gas, chemical, power, LNG, hydrogen refueling stations, metallurgy, pharmaceutical and offshore engineering. It serves as the core safety valve for skid-mounted units, metering pipelines, wellheads and instrument sampling systems.

5.The product complies with international oil & gas industry standards including API 6D, ASME B16.34, ISO 17292 and NACE MR0175.