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TESCOM™ Anderson Greenwood Instrumentation Models HD27M/HD27MK Primary Isolation
Models HD27M/HD27MK Primary Isolation
Integrally forged, one piece slimline Monoflange block and bleed assemblies for primary isolation of pressure take-offs, where the valve is mounted directly to the vessel or process pipe


  • One-piece ultra-slim 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.
  • 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.
  • Heavy duty needle type globe valve ensuring bubble-tight shut-off on isolation or venting service.
  • Gauge adaptors allow flexible positioning of gauges and instruments with a choice of designs available (optional).
  • Firesafe design to meet API 607, BS6755 Part 2 (optional).