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TESCOM™ Anderson Greenwood Instrumentation Models H64T/H64F Keyblok Interlock Manifold
A double block and bleed valve offering unique solutions to High Integrity Pressure Protection Systems (HIPPS) applications for isolation and calibration of instrumented equipment


  • Compact and ergonomic single-piece body design reduces installation cost due to reduced weight and smaller envelope space than competitive designs.
  • Unique single key interlock system provides enhanced safety with reduced chance of error.
  • Easy to identify actuation position increases safety in process operations by visual confirmation of valve position.
  • Application flexibility increases cost savings by utilizing only specification required valve(s) compared to competitive designs.
  • Flexibility of design through a single design style provides a cost effective solution for single or multiple pressure tap points.
  • Sequenced valve operation.
  • PEEK seats (ANSI Classes 150 and 2500).
  • Proximity switch (SIL3, ExII 1G Exia IIC T6) plus bracket.
  • Compliant with Pressure Equipment Directive.
  • Body material certified to EN10204 3.1.


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