Dbb Ball Valves (Double block & bleed) Instrument Alloy Ball Valve

Double block & bleed ball valves are mainly suitable for the instrumentation but is also required as an alternative to the in-line installation of two valves.

Thanks to a DBB ball valve, it is possible to have the same result reducing costs,  overall dimensions and the ability to bleed off the plant, by controlling a potential leakage of the plant.

Double block & bleed valves DBB are recommended for any pressure class and ensure long-lasting seal.

They can be supplied both in the Trunnion and in the Floating version.

Main applications in the petrochemical field:

• Cryogenic service.
• Low temperature.
• Ambient temperature.
• High temperature.
• Corrosive fluids.
• High pressures.
• Samplings from line.
• Fluids  injection. 
• DBB Double Block and Bleed Ball Valve with Screwed Bonnet Needle Construction
• Features:
  1.ANSI B16.5 flanged inlet connections 1/2" to 3" sizes
  Class 150 rated to class 2500 rated.
  2.1/2"-1" FNPT thread outlet to ANSI/ASME B1.20.1(Depending on bore size)
  3.1/2"FNPT thread vent connection to ANSI/ASME B1.20.1
  4.Standard materials of stainless steel ASTM A182 F316/F316L
  5.Optional materials include super duplex,Monel,Hastelloy,Inconel
  6.Raised face to ring type joint flange styles
  7.One-piece forged construction flange as standard
  8.Fire safe desined.