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About This Item

 

Full Description

The standard applies to pilot operated and direct acting pressure reducing, pressure relieving (back pressure), differential pressure and temperature regulators. The FCI has periodically updated the standard since the standard's development in 2001.

Responding to the industry's request, the FCI has recently updated the standard to include Class VIII, which is a "no permissible leakage" or "bubble tight" standard generally associated with resilient seating regulators either balanced or unbalanced with "O" rings or other gapless seals.

 

Document History

  1. FCI 70-3-2016

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    Regulator Seat Leakage

    • Most Recent
  2. FCI 70-3-2015


    Regulator Seat Leakage

    • Historical Version
  3. FCI 70-3-2004


    Regulator Seat Leakage

    • Historical Version