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Koppl hot tap equipment connected to an exposed pipeline
Koppl field work
Mr. Koppl and a fellow worker operating historic hot tap equipment
Mr. Koppl at work

Pipeline services since 1924

Time-honored standards. Modern field control.

Koppl grew from a Southern California machine shop into a live-line specialist serving water, wastewater, industrial, energy, HVAC, and pressure-pipe systems.

Discuss the line (323) 888-2211

Built around the line

Service, equipment, and field judgment.

Koppl’s core work includes Hot Tapping, Line Stopping, Pipe Freezing, Valve Insertion, and Concrete Pressure Pipe Repair. These services help owners modify or repair critical systems with less interruption. In-house fabrication and equipment knowledge connect the first project review to the work in the field.

Explore our history
Historic equipment for Koppl’s first 36-inch hot tap in Torrance, California, in 1955
Torrance, 1955Equipment for Koppl’s first 36-inch hot tap.

What guides the work

Planning, equipment, and people.

The line conditions shape the service, equipment, and crew needed for each project.

Project planning

Share the pipe material, size, pressure, contents, and site access to start the project discussion.

Field experience

Technicians, welders, and fabricators bring practical experience to the work.

Equipment and fabrication

Koppl pairs field services with fittings, equipment, and in-house fabrication.

Regional response

Regional contacts and a 24/7 emergency phone line connect customers with a Koppl crew.

Core live-line capabilities

Continuity is the common objective.

Each service solves a different part of the operating constraint.

Hot tap machine and orange valve connected to a pipe in an excavationConnect without shutdownHot TappingAdd a branch connection to an operating pipeline and maintain service across the wider system.Explore service Crane lifting an 84-inch bag line stop assembly out of the lineCreate controlled isolationLine StoppingTemporarily isolate a section of active pipe so modifications or repairs can move forward with less system-wide disruption.Explore service Pipe-freezing jacket fitted around an angled pipe in a plantIsolate without drainingPipe FreezingCreate a monitored ice plug for targeted work where draining or a broader shutdown is impractical.Explore service Mueller insertion valve installed on a water main in a shored trenchAdd permanent controlValve InsertionInstall a permanent valve on an active water main with minimal service interruption and a focused excavation footprint.Explore service Exposed concrete pressure pipe with a steel connection section and red endIsolate, fabricate, repairConcrete Pressure Pipe RepairKOPPL-KRETE™ combines isolation, in-house fabrication, and field repair for concrete pressure pipe systems.Explore service

ISS family of companies

Separate companies working together.

Koppl and Industrial Specialty Services are separate companies. Koppl brings its pipeline services, equipment, and field experience to the ISS family of companies.

Industrial specialty mechanical services.

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Start with what you know

Bring us the operating constraint.

Koppl will help connect the line conditions, service method, equipment, and regional response into a workable next step.

Call (323) 888-2211Email project details

24/7 emergency responseFind a regional contact