Models F29/F33K

KEYBLOKAnderson Greenwood

Integrally forged, one piece double block and bleed Keyblok assemblies for primary isolation of pressure take-offs, where the valve is mounted directly to the vessel or process pipe

Suitable for double block and bleed applications including pressure, level and flow measurement, sampling and chemical injection service. Instruments may be mounted directly to the valve outlet or remotely with gauge lines/impulse pipe work.

  • One-piece forged body combines a compact design with strength and reduced potential leak paths compared to conventional designs.
  • Flanged inlet connections available in a choice of sizes and ratings to suit each application.
  • Heavy duty needle type globe valve ensures bubble-tight shut-off on venting or isolation service.
  • Outside screw and yoke (OS&Y) needle type globe valve with investment cast yoke and bolted bonnet provides high mechanical strength and reliability on primary isolation service.
  • Bolt-on outlet option allows choice of connections for dual instrument mounting, welded connections and chemical injection.
  • Firesafe design to meet API 607, BS6755 Part 2 (optional).

Technical Data




Up to 10000 psig




Up to +1000°F



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