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Title: A Novel Concept For Enhanced Gas Utility Operations A Better Connection At The Main
Author: Laruie T. Brown
Source: American Gas Association 1987
Year Published: 1987
Abstract: For several years, Niagara Mohawk Power Corporation of Syracuse, New York, and Perfection Corporation of Madison, Ohio, have worked together to develop a new product, which is being introduced this May. What is unique about this product is the method by which the tee affixes itself to the gas main. The product is called the PermaLock Mechanical Tipping Tee, due to the fact that the installation and tapping are done mechanically without the need for heat fusion to the polyethylene gas main. The PermaLock is a mechanical tapping tee for affixing and tapping into a polyethylene gas main for the purpose of installing a residential or commercial gas service. Niagara Mohawk is a firm believer in heat fusion, specifically butt fusion of polyethylene pipe in larger sizes. However, in the smaller service sizes, mechanical joining is the most reliable and cost-effective method of joining polyethylene gas piping. Previously, in our installations of polyethylene service laterals, all joints were mechanical except the joint at the main. The objective of this research program was to develop an improved method of mechanically joining a service to a main, making it possible to install an entire service without need for operator qualifications, fusion irons, fusion joining jigs, generators, and the additional auxiliary equipment required for heat fusion. It was at this point that we became aware of Perfections reputation in the industry as an innovative research group that was developing new hardware for the gas distribution industry. Perfection was called to join with us in a research project to develop this improved main connection.

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