Double Bleed And Block Socket Weld ASME150 DBB Ball Valve

Stainless Steel Double Bleed and Double Block (DBB) Ball Valves

Double Block and Bleed
Double Block and Bleed Ball Valves are aimed to get a double barrier on the piping, and bleed the fluid trapped between the two balls from a dedicated drain line. Body construction can be either forging or centrifugal casting. Wide range of materials: carbon steels, austenitic or martensitic SS, duplex-superduplex SS, nickel-based alloys.

Valve design can be either Trunnion or Floating type, anti blow-out stem and typically SPE seat design. Drain port is normally provided with a floating ball valve, to be fitted with Final User drain line. Valve seats can be soft or metal to metal hard-faced.

Size range(s): NPS 1/2 - 2 (DN 15 - 50)
Pressure rating: ASME Classes 150 - 2500
Standard connections: Threaded, socket weld, flanged

Material Selection for Gate Valves:

• Carbon Steel (A105)
• Low Temperture Carbon Steel (LF2)
• Stainless Steel (SS304, SS304L, SS316, SS316L, SS347, 904L)
• Low Alloys (F1, F11, F22)
• High Alloys (F5, F9,F91, F62, F20 )
• Duplex & Super Duplex (2205, 2507, S32760)
• Bronze (C95800, C95500, C95400)
• Inconel (Inconel 625, Inconel 825)