TUF-LOK PIPE COUPLINGS
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TUF-LOK PIPE COUPLINGS - 1

PIPE COUPLINGS Ring Grip Series 689, 688 & 698

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TUF-LOK PIPE COUPLINGS - 2

Zinc Plated Coupling Stainless Steel Coupling Self-Aligning and Self-Grounded The Tuf-Lok® ring grip pipe coupling is a rugged, heavy duty, self-aligning and self-grounded pipe coupling with a high end pull for almost any application where pipe ends need to be connected. The Tuf-Lok pipe coupling installs quickly, reducing installation costs. Reinstallation is also fast and easy. This makes it ideal for applications where assembly and disassembly are required. Also, with the Tuf-Lok ring grip pipe coupling the pipe ends do not require machining or grooving and never become marred or damaged...

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TUF-LOK PIPE COUPLINGS - 3

Dimensions & Specications BOLT COVER PIPE Tuf-Lok Ring Grip Pipe Coupling Series 689, 688 and 698 Nominal Pipe Outside Series Maximum Pipe Size Diameter Number Working Pressure Inches (mm) Inches (mm) PSIG (barg) Maximum End Load* Pounds (N) Approximate Weight, Ea. Pounds (kg) * Working pressure and end load are total, including equivalent loads based on proper coupling assembly.

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TUF-LOK PIPE COUPLINGS - 4

Easy Assembly The Tuf-Lok ring grip pipe coupling can be installed on any pipe having the same outside diameter, such as Schedule 10, Schedule 40 or Schedule 80. After welding the metal rings onto each pipe 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 eld. No special tools are required for assembly. RUBBER GASKET NYLON RING GAUGE METAL RING How It’s Assembled Step 1 - A Tuf-Lok coupling ring is placed over each square cut, deburred pipe end. Step 6 - The Tuf-Lok rubber gasket is positioned...

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