Anderson Greenwood (AGCO) H70DB Severe Service Primary Isolation Root Valve
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Anderson Greenwood (AGCO) H70DB Severe Service Primary Isolation Root Valve

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The TESCOM™ AGI – Anderson Greenwood (AGCO) H70DB ANSI Class 2500 double block and bleed primary isolation root valve meets the requirements of ASME B16.34 and is fire tested to BS 6755 for pressures up to 6,000 psig (414 barg). The H70DB is designed to provide redundant block valve capabilities in hazardous conditions, and intended to replace the gate, globe, gauge, and bleed valves found in traditional instrument installations.

Features

  • 80% less leak points to traditional piped-up instrumentation penetrations
  • Compact, Economical, single-piece barstock construction, and pre-installed bleed valve provides strength, rigidity, and eliminates need for fittings, tees, valves and tubing
  • Valve is shipped complete, and hydrostatically tested for easy installation
  • Soft or metal seats can be replaced in-line without removing the valve
  • Non-rotating stem design eliminates packing wear and seat galling
  • Reliable in severe service applications
  • Metal-to-metal body-to-bonnet seal in constant compression prevents bonnet thread corrosion, eliminates possible tensile breakage and gives a reliable seal point
  • Safety back seating prevents stem blowout or accidental removal while in operation and provides a metal-to-metal secondary stem seal while in the full open position
  • Bonnet lock plate prevents accidental separation of bonnet from body while allowing easy maintenance and repair
  • Optional multi-port gauge connections for versatile positioning of gauges or pressure switches without additional penetration of main piping

Applications

  • For redundant block valve capabilities in severe or hazardous process conditions