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The ASC ENGINEERED SOLUTIONS 390213216 is a Gruvlok 6-inch 74CL Sabertooth painted rigid coupling designed for grooved-end piping systems. It ships with a CenterLok EPDM gasket that self-centers in the coupling housing during installation, reducing misalignment issues. The ductile iron body is factory-painted for corrosion resistance. This rigid coupling maintains angular stiffness at the joint, making it suited for systems where pipe movement must be controlled. Mechanical contractors and pipefitters install this fitting on commercial and industrial piping systems where grooved mechanical joining is specified.
The 390213216 is intended for 6-inch grooved-end pipe installations in commercial HVAC hydronic systems, fire protection piping, and industrial process piping. The rigid design limits joint deflection and is appropriate where a fixed, non-flexible connection is required by the system design or engineer of record. The included CenterLok EPDM gasket is suitable for a range of water-based service applications typical in these systems.
Designed as an OEM-style grooved mechanical coupling for use with 6-inch grooved-end pipe conforming to standard Gruvlok groove specifications.
Installation should be performed by a qualified pipefitter or mechanical contractor familiar with grooved mechanical joining systems. Verify pipe ends are clean, deburred, and properly grooved to the manufacturer groove specification before assembly. Depressurize and drain the piping system completely before removing or replacing any coupling. Lubricate the EPDM gasket with the appropriate gasket lubricant per the manufacturer guidelines prior to seating.
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