DIB Valves

Double isolation & bleed

We can offer double isolation and bleed valves in various configurations in all materials: Carbon steel, Stainless steel, Duplex, 6Mo and Titanium.

DIB-1 Both Seats Bidirectional
DIB-2 One seat Undirectional and One Seat Bidirectional

According to API 6D Table K.1 specify the following valves that can be used as double isolation and bleed valve:

Two block valves with bleed between, Slab and/or through conduit gate DIB-1, Trunnion Mounted ball valve DIB-2, Expending plug DIB-1 and expending gate DIB-2. Some valves may have preffered sealing direction and/or specified sequence of operation.

All double isloation & bleed valves are also working as double block and bleed (DBB) valve.


Oil & Gas, Petrochemical, Pipelines, Offshore/Onshore, Subsea, Chemical, Power Generation, Water Industries

End Connections available

RF/RJ Flanged, compact flanged, SW / NPT / BW

Pressure class

ANSI 150lbs – 2500lbs, API 3000-15000psi


½″ - 60″, Reduce and Full bore


API, ASME, ASTM, BS, ISO, MSS & NACE, Cryogenic service
Double Expanding Plug Valve