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 floating ball valve design, Med 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 1/2” through 2”, 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 wrench or motorized actuation(hydraulic, pneumatic, gas-over-oil or electric actuator)
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