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Title: Weko-Seal For Cast Iron Joint Repair
Author: Robert A. Harper
Source: American Gas Association 1976
Year Published: 1976
Abstract: Im very pleased to have this opportunity to tell you about a unique process weve begun to employ in Chicago for repairing leaks in cast iron bell joints from inside the pipe. Not large pipe. Twenty-four-inch-diameter pipe! Ive brought a film of a 30-second television announcement describing the technique, and Id like to show it now in order to illustrate quickly what Im talking about. May I have the lights off, please. External clamping has been the traditional means of repairing casi iron bell joints. And it has called for a street opening for every joint repaired. In recent years, increasing labor costs, underground utility congestion, and public and city objections to street openings have prompted us to find alternate ways to repair joints. One alternative Peoples Gas Light and Coke Company has employed, as I am sure some of your companies have done, is working from inside the pipe. We gain access to many pipe joints from relatively few street openings, resulting in lower unit costs per repair.

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