Product Overview
KASI supplies the GripSafe® ST Double Block and Bleed (DBB) Isolation & Test Plug for rent and sale across Canada and Alberta. Manufactured by USA Industries, the GripSafe® ST DBB is the safest and most reliable plug in the world, designed with a patented independent wedge gripping system that ensures maximum holding power and minimizes risk to personnel and equipment.
As the official authorized distributor of USA Industries in Canada, KASI delivers DBB plugs trusted for flange weld testing, isolation, pre/post weld operations, and line purging.
The GripSafe® ST DBB plug is a next-generation safety device engineered to enhance performance in pipeline testing and isolation. Unlike traditional plugs, the DBB design includes dual seals that allow operators to place pressure between them for superior weld verification, leak detection, and safety assurance.
Key features:
- Independent Wedge Gripping System: Provides maximum holding capability and prevents ejections.
- Gritlock® Wedge Coating: Improves grip and durability in demanding environments.
- Tri-Ply® Seals: Enhance sealing performance and reliability.
- Aviation-Grade Aluminum Body: Lightweight yet strong for industrial use.
- Dual Port Design (6”+ models): Enables water circulation for pre/post weld cooling.
- Positive Isolation Monitoring: Pressure between seals verifies integrity.
Applications:
- Flange Weld Testing: Apply hydrostatic pressure between seals to test weld-neck flanges for hoop stress failure, leaks, or pinhole paths, while protecting personnel from pressure discharge.
- Pre/Post Weld Operations: Circulate cooling water between dual seals (on 6”+ models) to enhance weld safety and efficiency.
- Isolation: Prevent exposure to hydrocarbons or other process leaks. Mitigate risks from valve failures, leaks, or inadvertent valve openings.
- Positive Isolation Monitoring: Ensure plug seals are functioning by monitoring pressure between the two seals.
- Line Purging: Safely introduce inert gases through the vent pipe for back-purging welds or oxygen removal.
Larger sizes and custom configurations available upon request
Product brochure
What is a Double Block and Bleed (DBB) plug used for?
A DBB plug is used for flange weld testing, isolation, line purging, and pre/post weld operations, providing enhanced safety with dual seals and bleed monitoring.
How does the GripSafe® ST DBB improve safety?
Its independent wedge gripping system and dual seals prevent plug ejection and allow positive isolation monitoring, significantly reducing risk.
Can the DBB plug be used for line purging?
Yes. The DBB design allows inert gases to be safely fed through the vent pipe for back-purging welds or oxygen removal.
Can DBB plugs be rented as well as purchased?
Yes. KASI offers GripSafe® ST DBB plugs for rent and sale, giving customers flexible access to safe isolation technology.
Where can I buy GripSafe® ST DBB plugs in Canada?
KASI is the official USA Industries distributor in Canada, supplying DBB plugs nationwide with local support from Edmonton, Alberta.
