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•Article: Observations Of MEGALUG® Mechanical Joint Restraints In Corrosive Environments

By EBAA Iron Sales, Inc.

Since its introduction in the early 1980's, the MEGALUG® joint restraint has proven itself in thousands f installations across the country. However, the effect a corrosive environment may have on a MEGALUG restraint is still questioned. In a like manner, what effect does a MEGALUG have on a pipe in a corrosive environment? These questions, for which only time would provide the answer, can now be addressed. This bulletin will look at these questions in light of observations of two tests conducted by EBAA Iron and a sample removed from the field after nearly ten years of service.

In November 1993, EBAA began a three-month test in which a test section was placed in a 3% salt solution. The test section consisted of short sections of mechanical joint and plain end ductile iron pipe restrained with a MEGALUG restraint. Low alloy steel T-bolts were used to make the joint. MEGALUG restraints and caps sealed the pipe ends. The section was filled with water, vented of any air, and pressurized to 150 psi. The test section was placed in a tank with the plain end part of the joint completely submerged. All but two pockets of the restraint and one and one half of the T-bolts were submerged. The ends of the test section extended through the tank walls and were not exposed to the salt water.

Click Here To Download:
•Article: Observations Of MEGALUG® Mechanical Joint Restraints In Corrosive Environments