Team line stops (or plug offs) for low, medium, or high pressure piping systems are done after a hot tap has been completed. Team also performs line stops on vacuum piping systems.
The line stop involves the use of Team's custom-designed full encirclement split tee fitting (A), the cutting of a hole in the pipeline (B), and the inserting of a process compatible plug to block and stop product flow (C).
Team's line stop plug provides a better, safer, seal on all types of pipe. After plugging, the valve is removed by installing a completion plug in the Team SealTite ® flange (D). Unlike other seals that depend on an O-ring alone, the Seal Tite® has a metal-to-metal seat backed up by a high temperature O-ring. If re-entry into the pipe is ever required, a safe re-entry and reseal can be made through the same closure flange.
Team's line stops can be applied to pipes 1/2" to 48" in diameter, and enable pipelines and plant piping systems to be isolated for repairs or additions without causing an interruption in service or loss of products.
Team's line stop services are used extensively by petrochemical plants, refineries, municipal water districts, hospitals, steel mills, nuclear power plants, and pipeline operating companies.
Operating pressures for Team line stops include the following ranges:
- 4" through 12" 1000 psig (69 Bar)
- 14" through 20" 750 psig (52 Bar)
- 12" through 24" 625 psig (43 Bar)
- 26" through 36" 500 psig (34 Bar)
- 42" through 48" 150 psig (10 Bar)
Team's most requested line stop services include the following:
- Piping systems from 1/2" to 48" in diameter
- Pressured piping systems to 1,000 psig (69 Bar)
- Piping systems with temperatures from -25oF (-32oC) to 550oF (288oC)
- Piping systems of carbon steel, stainless alloys, cast iron, concrete and plastic
- Piping systems containing steam, water, hydrocarbons, acids, bases, plus other chemicals and gases
Team line stop applications include the following:
- Valve installation/replacement
- Pipe replacement
- Pipe repairs
- Repair pressure letdown stations
- Valve repairs
- Decommissioning pipes
- Isolate pressure vessels
- Rerouting of process flow
- External leaks
Team line stops are easily applied to the following pipe materials:
- Carbon steel
- Alloy steel
- Stainless steel
- Cast Iron
- Brass/copper
- Concrete lined pipe
- Concrete
- Transite
- Plastic
- Fiberglass
