Pigging Systems

I.S.T. pigging technology - The right system for your application.

Which I.S.T. pigging system is the right one for you depends on the type of work you need it for. How many and what kind of products do you want to convey? What level of cleaning do you expect? What is the limit of your investment expenditure? Just a few questions which need to be answered before planning begins. Whatever the final result, it will definitely be a customised one, and the optimum solution for your needs.

Either one or more pigs may be used - in the following systems:

Open system

The pigs are loaded into the system whenever necessary and then removed. The system works on a oneway principle. Recommended for work such as loading ships or for long distance pipelines.

Closed system

The pigs remain in the system for their entire operational life and do not need to be constantly loaded and then unloaded from the pipe. After travelling through the system they are registered at the receiving station. They are then pushed back into the launching station, e.g. with air or nitrogen, they remain there until the next pumping operation. The advantage? Pigs do not need to be changed frequently - they can remain in the system for several months.

Single-pig system

The single-pig system only has one pig in the pipe which goes into action when, for example, product residue needs to be cleared out of the line. The single-pig system is the cost-effective answer for simple tasks.

Two-pig system

This is the pigging principle chosen most often. It has two pigs in a pig launching and receiving station. When the pumping process begings the first pig is pushed into the line and the product then pumped in after it. The second pig pushes the product out of the pipe, cleaning any residue from the pipe as it moves along.

Three-pig, multiple-pig and individual-pig systems are also available for special applications.

Would you like to get a rough overview of our pigging systems and how our quotes are structured?
Request your sample quotation for a single-pig system now!