Trunnion Mounted Ball Valve

DBB Double Block & Bleed Ball Valve

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DBB Double Block & Bleed Ball Valve

The TCX Series DBB “Double Block and Bleed Isolation Philosophy” requires two in-line isolation valves and a bleed valve, used to drain or vent trapped fluid between the two closure elements in order to safely isolate safely the downstream pipe. This feature can be achieved with one single valves c/w a bleed port between the obturators. The Double Block & Bleed ball valve main applications Offshore Oil and Gas Production, Gas and Oil Terminals, LNG gas carrier and so on.




Size Range: 2”-24”

Pressure Class: ANSI 150-4500
                      API 2000-15000





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MAIN FEATURES AND OPTIONS CONFIGURATION AVAILABLE
Split body construction; bolted joints
Available in floating and trunnion construction
Extremely wide selection of materials for both body and internals, including: carbon steel, low alloy steels, stainless steels, Duplex 22/25 Cr, Ni-alloys and titanium
Overlays: Alloy 625 / 316L
Coatings: Tungsten Carbide / Chromium Carbide / ENP
Soft or Metal Seated
Single or Double Piston Effect Seat
Double block and bleed
Overlay on Sealing Surfaces Only
Cladding in Seat Pocket Areas
Fully Internally Clad
Special constructions available for High and Low Temperature (Cryogenic), erosive /abrasive, corrosive service

Ball/Ball
Ball/Globe
Ball/Needle/Ball
Ball/Needle/Ball Cartridge Type
Ball/Needle/Globe
Ball/Needle/Needle/Ball


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