Line Stopping | Hot Taps | Wet Tapping

LINE STOPPING • HOT TAPS • WET TAPPING • PIPE FREEZING
24 HOUR EMERGENCY SERVICE

American Piping Services
6625 S. Valley View Blvd Ste. 200
Las Vegas, Nevada 89118
Phone: 702.362.3622
Fax: 702.362.4225
Contractors License #49295
todd@apsnv.com

702-362-3622

AmericanPipingServices.com

Alpine Steel, LLC

Certified-Welding.com

Nation wide service for Hot Taps and Line Stops

American Piping Services, Inc. (APS) , Since 1999. APS provides Line Stopping and Hot Tapping services in Las Vegas , Nevada and the nation. We saw a need for a skilled and reliable 24-hour service in a town that works all day and night. APS is trained in all areas of Wet Tapping, Line Stopping and Pipe Freezing procedures. We take pride in a continuous safe and reliable service record. Line stopping is a process used to modify a line in a pipe system or make repairs without interrupting service to the rest of the system or depressurizing the line. It reduces the amount of time the line is out of service and avoids having to drain the system, which can be expensive, messy and slow. The basics of a line stop are as follows:

Line Stopping

Line stops can be performed by Hot Tapping the pipeline and inserting a temporary plug into the pipe. Installing a Line Stop on your system enables you to perform repairs, alterations and/or relocation without shutdowns and/or costly drainage. Performing a Dual Line Stop application can isolate a section of pipe to perform work safely and efficiently. Bypass Hot Taps may be provided to continue service to your pipe system with no interruption while performing work.

Two, four inch line stops, on both supply and return hot water lines, from a central plant.		Several line stop tapping sleeves installed on various sized pipe, to cut and cap.

610" line stop head installed and holding back 180º degree boiler water to relocate pipeline.		24" line stop unit on ductile iron pipe.

Note There are different types of line stop heads (folding or pivoting heads) depending on the size and type of line to be stopped. APS has the tooling to complete any type of stops you may require.

Line stopping is a process used to modify a line in a pipe system or make repairs without interrupting service to the rest of the system or depressurizing the line. It reduces the amount of time the line is out of service and avoids having to drain the system, which can be expensive, messy and slow. The basics of a line stop are as follows:

Step 1: A Hot Tap makes a hole in the pipe and a Line Stopping machine is bolted to the tapping valve.

Step 2: Once secure, the valve is opened and the machine is filled with whatever flows in the pipe.

Step 3: The Line Stop machine inserts a steel Plugging Head down through the open valve and into the pipe through the tapped hole.

Step 4: Then a sensor touches the inside wall of the pipe, and the Plugging Head moves and turns into the sealing position.

Step 5: The flow is then stopped and the pipe can depressurize and modifications or repairs can be made. Once the changes are complete, the pipe is repressurized and the plugging tees are blanked.

When you just can not interrupt service of a line to make repairs of modifications there is a way to keep continuous flow in the line and still do the work. This process is called a bypass.

What is a bypass? When you need to make a change in an existing system without interrupting the flow, a bypass is a great method. The process has several steps.

First, a set of bypass tees are attached to the pipe on either side of the area to be valved or repaired. Then a set of stop tees are attached on the pipe outside of where the pipe will be cut to add new valve or repair work. Then, on the very inside, vent holes are made to release the pressure in the portion of the pipe that will be cut.

Second, temporary sandwich type valves are installed on each of the tees and each one is hot tapped.

Then, the bypass pipe work is commissioned and installed and the up stream and down stream plugging machines are inserted into the fittings.

Once the bypass is functioning, the plugging machines are lowered and the pipe is plugged. The center section is ready to be de-pressurized through the vent hole fittings and that section can the be cut and altered in whatever way you need.

When the repair or modifications are finished, the center section is re-pressurized through the vent holes. Then the plugging machines are withdrawn and the main line becomes the line of flow.

To finish things off, the sandwich valves are removed, the fittings are all blinded and blanked off and the job is complete.