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Mainline Control Systems

Revolutionary flow-stopping systems for the natural gas industry.

Mainline Control Systems LogoMainline Control systems.

Mainline Control Systems (MCS) is a company formed to bring the unique Kleiss tapping and stopping system to North America.

Kleiss & Co. is a Dutch company that has been in business since 1967. In 1998, Kleiss developed the patented MDS Stopper and 100% stop off system. Since then, they have been perfecting and expanding the stopper and system capabilities.

MCS is in partnership with Kleiss to stock, support, and distribute the Kleiss systems across North America. Our technical ability allows us to educate and train the personnel operating the Kleiss tooling.

Additionally, MCS works with local distributors who can provide the end users with local support teams. These distributors have strong industry and product knowledge and can quickly meet the needs of their customers.

The Kleiss systems offer many advantages compared to traditional systems along with opening new application opportunities.

Kleiss MCS System and MDS Stoppers

In 1998, Kleiss & Co. developed an industry changing flow stopping system for the natural gas industry. This innovative system uses a patented Multi-Dimensional Safety (MDS) Stopper instead of the conventional flow stopping methods. The MDS Stopper is a user friendly, flexible, inflatable device which can stop off gas in any type of pipe material or wall thickness and various pipe diameters. The technology used in the MDS Stopper allows the systems to stop flow up to 120 psi. This means that one system can be used in many applications no longer needing a unique system for each pipe material.

Usage and Types

The Kleiss systems have been designed and engineered especially to save on weight, volume, and number of parts making it lightweight and easy-to-use. The system provides safe operation with a gas tight seal and two pressure gauges to monitor the pressure in the stopper as well as in the pipeline. The system was first introduced in the Netherlands, but is expanding to the United States and Canada.

Mainline Control Systems products that we carry: