A. Hot tap on the line is previously made, the linestop machine is attached to a temporary valve and the valve is opened. Linestop is hydraulically or mechanically pushed into line to plug the pipe.
B. There are various types of line stopping heads. The type illustrated in the picture on the left can hold pressures ranging from 1000 psi. A single linestop can be used to temporarily stop and abandon a pipeline.
C. Two or more linestops can be used in conjunction to isolate and bypass many intersecting lines at once. Fluid in the line is bypassed, leaving a workable dead section, in which, alterations, repairs, or valve additions can be achieved, while service provided by the line is continued.
D. When the required work is completed, and the linestop is to be removed; completion machines are installed onto the temporary valves. An IFT completion plug is installed into the outlet flange of the linestop fitting. This allows the linestop machines and temporary valves to be removed. A blind flange is usually installed to finished the linestop operation.
Pipeline linestops isolate a section of pipe, stopping its flow. IFT provides the most advanced linestop services available today! Sizes from 1/2" - 72" on any type of pipeline. Indoor linestops require various types of line stopping equipment and folding heads for tight inaccessible areas. IFT is the leader for indoor pipeline services. We can perform pipeline plug services on steam systems, air lines, chemical lines and chilled water systems anywhere, anytime. Changes to your manufacturing plant and piping systems can be solved without an outage. Pressures to 500 psi and temperatures through 500 deg. F.outage. Pressures through 500 psi and temperatures through 500 deg. F.
Get a quote for your indoor, outdoor, underground, or above, high pressure or hazardous pipeline linestop needs. Call IFT 1-800-221-3332
|IFT Cut Sheet PDFs|
We can hot tap Tanks, Vessels, Conduite, Walls and Concrete Cylinders.Read more
Hot taps, Line stops on all pipe types up to 72inch pipeline nationwide.Read more
Valve replacment on all size valves live in the system with little to no downtime.Read more
"We were impressed with Jason, he represented your company very well on the job in Yuma. We’ve had vendors/workers in the past who show up, fumble around and are not totally familiar with their equipment. Not the case with Jason, he was professional, prepared and jumped right in and got started."- Craig Hochheimer,
City of Yuma, AZ
"I just wanted to take a minute to thank and commend you on your team selection and the gentleman who performed the work out here at NIH for us last week. Tom and his partner were on time, and performed their work with the utmost professionalism. This is a very high profile project for my firm and for NIH and your technicians made us look very good and in fact helped us solve a big testing problem."- Michael McReady,
JCM Associates, Inc.
"City broke off a 2" air relief valve on a 16" ductile sewage pipeline with 45psi. Before the valve could be replaced we had to rush out and complete a 16" linestop. The linestop was successful with a 100% plug. On the left is the thank you letter from the City ."- James W. Pinkerton,
Manager, City of Kingston, Tennessee