Tuf-Lok™ Tube Couplings Assembly

The Tuf-Lok ring grip tube coupling can be installed on any pipe having the same outside diameter, such as 11GA, 14GA, 16GA. After welding the metal rings onto each tube end as shown, the Tuf-Lok coupling is ready to be installed. Steps 1 through 4 of the assembly shown below can be performed in the shop or in the field. No special tools are required for assembly.

Download the Installation and Operations Guide

Tuf-Lok Ring Grip Tube Couplings | Series 788 | Installation & Operations Guide | Bulletin T052213

 

How It's Assembled
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1: A Tuf-Lok coupling ring is placed over each square cut, deburred tube end.
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2: The Tuf-Lok coupling rings are held in place using the nylon ring gauges provided, ensuring correct welding position.
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3: The coupling ring is tack welded in place between the ring gauges.
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4: The nylon ring gauges are removed and the ring is con- tinuously welded on the tube end side only. The weld does not need to be air tight.
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5: A simple soap solution is used to lubricate the Tuf-Lok seal for ease of installation.
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6: The Tuf-Lok rubber gasket is positioned on one tube end.
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7: Both tube ends are butted together and the rubber gasket is centered.
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8: The Tuf-Lok cover slips over the rings and against the rubber gasket.
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9: Bonded metal tabs on the Tuf-Lok gasket are positioned between cover halves.
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10: With both metal Tuf-Lok covers positioned over the welded rings, the covers are evenly tightened.