Double Block & Bleed Valves

Hexbloks are used primarily on upstream offshore/onshore oil production and initial processing installations. Typically used on liquid hydrocarbon applications to minimize the size and weight of the pipe-valve assemblies associated with gauge pressure or analytical instrumentation. Used specifically for primary and/or secondary isolation, vent and calibration access, or sampling or injection applications.

Also used in downstream oil refining and petrochemical production on flanged process piping.

Features & Benefits
  • Overall length reduced by 70%
  • Overall weight reduced by 80%
  • Reduced labor costs
  • Reduced leak points
  • Brings pressure point closer to pressure measurement
  • Adjustable, live loaded Teflon or Grafoil packing on ball valves insures zero external leakage
  • Single and double flanged versions available along with NPT by NPT
  • Large variety of standard and optional forged or bar materials and outlet options, means you can select the style and material you need immediately from the catalog
  • Special built-to-order design inquires welcome

Sizes: 1/2″ through 2″; 10, 15, 20, 24 mm orifice sizes
Working pressure: in accordance to ASME B16.5 for class 150 to 2500 up to 5k
Working temperatures: 450°F (232°C) for Teflon packing and PEEK seas and graphite packing (fire safe)

  • API 607 5th Edition (Fire Test)
  • ASME VIII (pressure boundaries)
  • PED
  • ANSI B16.5 (flange dimensions)
  • EN10204.3.1 (material traceability)

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