Isolate and monitor potentially explosive vapors during hot work, and hydrotest new weld connections with one easy to operate tool. Dual port design creates a positive pressure barrier between the seals - safely isolating hot work from any residual upstream gases. GripTight® Isolation Test Plugs integrate a Double Block and Bleed Test Plug with GripTight® Grippers, ensuring operational safety, and minimizing the risk of blowout /expulsion due to unexpected upstream pressure in the line.