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TESCOM™ Anderson Greenwood Instrumentation H2 Valve Series
These maintenance-free valves feature a positive double-block arrangement that protects workers after they isolate process pressures, while their modular design reduces the number of potential leakage points.
In addition, the maintenance-free hand-operated DBB valves include a non-adjustable seal that avoids the release of high-pressure liquids or gases into the environment while requiring no packing adjustment over the valve’s lifetime.
TESCOM™ Anderson Greenwood Instrumentation H2 Valve Series


316 Stainless Steel
Integral metal to metal
Connection sizes
1/4" and 3/8"
Orifice size
0.236 in (6.0 mm)
Pressure rating (mcwp)
15,000 psig (103.4 MPa)
Temperature range (design min/max)
-70°F to 400°F (-57°C to 204°C)


  • Ease of installation and operations due to lighter, compact design and Double Block & Bleed bonnet ergonomics
  • Positive shutoff performance, non-rotating stem tip
  • Low fugitive emissions stem seal arrangement
  • No stem packing adjustment during operational service
  • Double Block & Bleed configuration provides ‘true’ process isolation at closure shut-off point (process path)
  • Available in various configurations to suit instrumentation valve applications for the full range of system designs
  • Visual identification of valve bonnet function with color-coded valve tags
  • Safety weep holes for packing & process connection integrity
  • Tested for compliance to ISO 19880.3 Valves: Gaseous Hydrogen Fueling Stations
  • QR code for quick access to online product documentation, local support, and distribution