Double Block and Bleed (DBB) Isolation & Testing Plug
Revolutionizing Positive Isolation and Testing of
Pipe Connections - Available for Sale or to Rent
USA Industries' Double Block & Bleed pipe plug is built with two separate sealing areas that allow the user to positively isolate upstream gases from internal piping. As a result of this design, it makes performing modifications, repairs and hot work much safer, quicker and easier. The Double Block & Bleed plug also has a vent between the compression seals that lets the user verify the seals' integrity and pressure test the hydrotest welds by positioning the weld between the two seals.
- Will reduce time and costs to repair and test welds
- Minimizes purge costs and associated waste
- Will leave no damage to the interior pipe walls
- Sizes 0.75" to 24" NPS are standard - larger sizes are available upon request
- For use in low and high-pressure applications
Custom 44" Double Block and Bleed Isolation Plug from USA Industries
Frequently Asked Questions
Yes! The Double Block & Bleed plug has a vent in between the compression seals that lets you to verify the seals integrity and pressure test / hydrotest welds by positioning the weld between the two seals.
The DBB plug operates in working pressures to 2,250 PSI (155.2 Bar). Use it to monitor isolation zone and upstream pressure, preventing backpressure build-up during tests.
The sealing material is made of urethane.
Our standard urethane seals continuous operating temperature are rated at 180°. We also offer high-temperature seals upon request.
Yes, we have several extended reach sizes available. Just let us know what reach you need.