GripTight® Isolation Plug

Monitor Upstream Pressure, Isolate & Test Weld Connections with One Tool!  

Protect your plant personnel today! 

Positively isolate and monitor potentially explosive vapors during hot work, then effectively hydrotest the new weld connection with one tool. The dual cavity port creates a complete air-free barrier between the seals - safely isolating the hot work from any residual upstream gases.

GripTight Isolation Plugs integrate our patented GripTight dual serrated gripper technology, with the functionality of a conventional Double Block and Bleed for increased operational safety, minimizing the risk of accidental blowout/expulsion due to unexpected upstream pressure.

Test Pressure:

  • 2250 PsiG (155 BarG) between the seals
  • Upstream pressures up to 1500 PsiG (103 BarG)

Size Range: 3/4” to 24” NPS (DN20 to DN600) - larger sizes available upon request

Standard Seal Material: Urethane – alternative materials available upon request


  • Monitor potentially explosive vapors during hot work
  • Dual port system allows water to be circulated between seals, providing improved cooling during pre/post weld procedures
  • Patented gripper technology minimizes risk of accidental blowout/expulsion
  • Creates a complete air-free barrier between seals
  • Lightweight, aluminum and steel construction makes it easy to use
  • Perform pressure tests with less than a gallon (3.8L) of water - reducing fill times, and waste/treatment expenses




GripTight® Isolation Plug
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