GripTight® Isolation Plug

GripTight Isolation Plugs integrate a Double Block and Bleed Test Plug with GripTight grippers. The upstream port allows operators to positively isolate and monitor potentially explosive vapors during hot work. The dual port design allows water to be introduced to the section between the seals through the fill port while air is
simultaneously evacuated through the vent port – creating a positive pressure barrier between the hotwork and residual upstream gases. After hotwork is complete, the plug can be repositioned to hydrotest the new weld connection.

GripTight grippers improve the operational safety minimizing the risk of accidental plug blowout/expulsion due to improper use or unexpected upstream pressure in the line. GripTight Isolation Plugs are capable of withstanding test pressures to 2250 PsiG (155.1BarG) between the seals, and upstream pressures up to 1500 PsiG (103 BarG). As upstream pressure increases, GripTight grippers use the pressure to grip and seal more securely against the pipe’s I.D. Sizes from 3/4” to 48” NPS (DN20-DN1200) -larger sizes available. ASME PCC-2 (Article 503) Type IV testing device.