Model H64T/H64F

KEYBLOKAnderson Greenwood

A double block and bleed valve offering unique solutions to High Integrity Pressure Protection Systems (HIPPS) applications for isolation and calibration of instrumented equipment

Suitable for use in instrumented pressure protection systems requiring SIL3 capabilities and where full flow relief proves impractical. Process to instrument isolation with controlled operation of isolation and vent functions for operator and system safety.

  • 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.

Technical Data






NPS 1-2


Up to +400°F



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