The DBB (Double Block & Bleed) features of the valve or valve is the ability to segregate two pressure sources and to bleed / vent pressure in the void between the two sealing elements.


Carbon Steel ASTM A216 - WCB or Equivalent
ASTM A105N or Equivalent
Low Carbon Steel ASTM A350 - LF2 or Equivalent
Duplex Stainless Steel ASTM A182 - F51, F53, F55 or Equivalent
Stainless Steel ASTM A182 - F304, F304L, F316, F316L or Equivalent
Special Alloy Steel Inconel 625, 825 or Equivalent
Hastelloy C
Monel or Equivalent

Production Range

  • Pressure Rating: ASME class 150 to class 2,500
  • Service Temperature: Up to +500℃
  • Available Size: NPS 2”~ 12”

Design Standards

  • Basic Standards:API 6D, ISO 14313, ASME B16.34
  • Face to Face:Maker Standard

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