TUF-LOK PIPE COUPLINGS

Product catalog summary

Overview: The Tuf-Lok® Ring Grip Pipe Coupling Series 689, 688, and 698 are designed for robust and versatile pipe connections. These couplings are self-aligning, self-grounded, and suitable for high-pressure and full vacuum applications. They are reusable, absorb vibrations, and are leakproof both internally and externally.

Features:

Quick installation and reinstallation, reducing costs.
High end pull strength, accommodating dynamic loads and excessive pipe movement.
Special gasket design for high pressure and vacuum conditions, ensuring leakproof connections even underwater.
Compatible with various metal pipes, including mild steel, stainless steel, and aluminum, regardless of wall thickness.
Available in stainless steel and zinc-plated options.

Specifications:

Nominal pipe sizes range from 1 inch to 10 inches.
Maximum working pressure is 150 PSIG for most sizes, with a maximum end load varying by size.
Dimensions and weights vary by pipe size, with detailed specifications provided for each.

Assembly Procedure:

Place a Tuf-Lok coupling ring over each deburred pipe end.
Use nylon ring gauges to hold the coupling rings in place for correct welding position.
Tack weld the coupling ring between the ring gauges.
Remove the nylon ring gauges and continuously weld the ring on the pipe end side.
Lubricate the Tuf-Lok gasket with a soap solution for easy installation.
Position the rubber gasket on one pipe end and butt the pipe ends together.
Slip the Tuf-Lok cover over the rings and against the rubber gasket.
Position bonded metal tabs on the gasket between cover halves and tighten the covers evenly.

Applications: Suitable for any pipe with the same outside diameter, such as Schedule 10, 40, or 80. The assembly can be performed in the shop or field without special tools.

Contact Information: TUF-LOK International, Madison, Wisconsin, USA. Phone: 608.270.9478, Fax: 608.270.2080. TUF-LOK UK, Aylesbury, UK. Phone: +44 (0) 1706 822512, Email: [email protected].

Catalog excerpts

PIPE COUPLINGS Ring Grip Series 689, 688 & 698

Open the catalog to page 1

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 when...

Open the catalog to page 2

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.

Open the catalog to page 3

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 on...

Open the catalog to page 4

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