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Trunnion DBB Ball Valve

Double Block and Bleed Valves assure double isolation function thanks to two obturator inserted in a single body and they provide the bleed function by means of a bleed/vent system located between obturators (body port and ball, gate or needle valve), from the trunnion mounted design, vatac DBB......

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Double Block and Bleed Valves assure double isolation function thanks to two obturator inserted in a single body and they provide the bleed function by means of a bleed/vent system located between obturators (body port and ball, gate or needle valve), from the trunnion mounted design, vatac DBB valves with several different constructions.

» Double fixed balls hinged on supports, and floating metal or soft seats, central needle vent valve

» Size Range from 3” through 12”, large sizes on request

» Pressure Range: from ASME Class 150 to ASME Class 2500

» Temperature Range: from -46 to 450

» Side Entry Forged Steel Valves

» On request, Top-Entry design

» Low pressure loss through the valve

» Low actuation torque

» “CE” marking in compliance with PED Directive 97/23/EC

» Full bore or Reduce bore

» Different kinds of ends connections(RF/RTJ) Flanges, Butt weld, Clamp Connection, Socket Welding.

» Wide availability of materials sepending on the specifications(carbon steel, stainless steel or Duplex steel for service in corrosive environments, Chrome-Molybdenum alloy steel for high temperature service, etc.)

» Materials with anti-corrosion properties according to NACE MR 0175

» On request, seat pocket area overlay, seal area overylay, or completed cladding on wetted surface(welded overlays in inconel 625, Stainless Steel 316 etc., or Electroless Nickel Plating)

» Suitable for gear or motorized actuation(hydraulic, pneumatic, gas-over-oil or electric actuator)

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