Article
A Brief Description Of The Background And Operation Of The MEGALUG® System Of Restraint
February 13, 2006
•Article: A Brief Description Of The Background And Operation Of The MEGALUG® System Of Restraint
The mechanical joint is one of the most versatile joints available for the water an wastewater industry. It was first patented in 1921 by W.D Moore and the joint was standardized in the early 40's. The versatility of the joint is born out by its longevity. Since the time of its standardization through AWWA, the basic joint has not changed and till finds considerable use. This is especially true of fittings, valves, hydrants, and the like.
One thing that has changed and developed over the years is restraint for the mechanical joint. As the joint became more popular, people searched for ways to restrain the joint and simplify the pipeline construction process. One style of restraint came into the scene and has endured to this day. That is the set screw retainer gland. This product, unlike welded or grooved restraint, permitted the pipe to be cut and fabricated in the field. This feature is very important for pipeline configurations, above and below ground, that must be changed to conform to existing conditions. However the set screw retainer gland does have it's drawbacks. The installation can be involved and complicated and there are significant limits to the performance of set screw restraint in larger sizes. The MEGALUG® system of restraint for the mechanical joint takes these design needs and product deficiencies into account to provide the best field adaptable restraint available.
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•Article: A Brief Description Of The Background And Operation Of The MEGALUG® System Of Restraint
SOURCE: EBAA Iron Sales, Inc.
