Line Stops
GVT performs single and double line stops. A line stop is considered a temporary service.

Line stops will stop the flow inside an existing pipeline that is under pressure. This is done by cutting a hole in the pipe and inserting a device that will seal the pipe so the flow in the line can be temporarily stopped with a stopping head.

After the work on the line is complete, the stopping head is taken out, and a plug is put into the fitting and the hole is capped. If needed, future line stops can be performed with the same fitting. A nozzle or split tee for line stopping is welded to the existing system.

Only a small section of line is taken out of service, so that work can be performed without interrupting service to customers on the line rest of the line. This is important when the customers using the line are emergency, medical facilities, factories, or other highly populated areas.

Type	Size in Inches
Single Line Stop	3	4	6	8	10	12	14	16	18	20	24
Double Line Stop	3	4	6	8	10	12	14	16	18	20	24

Pipe Materials
Line stops can be applied to the following pipe materials, as well as others not listed:

Steel Alloy steel Stainless steel Cast Iron

Pre-stressed Concrete Transite Plastic

Line Stops
Taps
Valve Inserts