What coupling sizes are available for pipe and tubing?
Schedule Pipe: 2”, 3”, 4”, 5”, 6”, 8”, 10”
O.D. Tubing: 2”, 3”, 4”, 5”, 6”
See Dimensions & Specifications for more information.
What stocked materials of construction are available for pipe and tubing couplings?
Coupling Covers and Fasteners: Zinc Plated Steel and 316 Stainless Steel
Rings: Steel, 316 Stainless Steel, and Aluminum
Seals: Black EPDM, FDA White Buna-N, and FDA White Silicone
Note: Other materials of construction for seals are available. Please contact us.
See Product Features for more application information.
Are the couplings or parts in stock?
Typically, all coupling configurations and listed parts are stocked and ready to ship.
What is the shipping lead time for couplings and parts?
Lead time is typically 2-4 days.
How do you install a Tuf-Lok coupling?
See Assembly/Installation instructions for installation procedure and tips.
What are the plastic clips (ring gauges) used for?
The ring gauges are depth gauges used to hold the coupling weld rings in place while they are being welded to the pipe or tubing. Coupling rings need to be positioned at the correct distance for proper installation of the Tuf-Lok coupling.
See Assembly/Installation instructions for more information.
What is the difference between pipe and tube?
Schedule pipe has an O.D. that is larger than its nominal size, whereas tubing has an O.D. that matches its nominal size. Standards for pipe schedule (wall thickness) have different dimensions than the standards for tubing wall thickness.
Why should I choose the 8-inch Extreme Duty Coupling vs. the Standard 8” Coupling?
The standard heavy duty 8” pipe coupling is suitable for most applications, but the extreme duty 8” pipe coupling allows for higher working pressure and end pull strength for extreme applications.
What is the lifespan and maintenance requirements of Tuf-Lok couplings?
Lifespan and maintenance requirements on Tuf-Lok couplings are dependent on application and environmental conditions as well as materials of construction.
What is the pressure and temperature range that Tuf-Lok products can handle?
The range of pressure and temperature limits on Tuf-Lok products varies, but up to 150 psig maximum working pressure and up to 350 degrees F with silicone seal. Therm-Line All Steel Expansion Joints compensate for temperature expansion.
What are the key benefits of using a Tuf-Lok product compared to other pipe joining methods?
Tuf-Lok products are rigid, self-aligning, with strong end-pull strength, and quality made by Tuf-Lok. This means you can trust Tuf-Lok products to do what they are designed to do.
What types of pipe materials are compatible with Tuf-Lok products?
Tuf-Lok products are compatible with a variety of pipe materials, including carbon or mild steel, stainless steel, and aluminum pipe or tubing.
How do Tuf-Lok pipe couplings compare to other pipe joining methods when it comes to cost and installation time?
Installation time and cost for Tuf-Lok pipe couplings are comparable to other couplings, but the key benefits to using Tuf-Lok couplings make them the best choice for most projects. Watch a video that explores the Tuf-Lok installation process.
Can Tuf-Lok couplings be used with pipes of different materials or thicknesses?
Absolutely, yes. Tuf-Lok couplings are compatible with a variety of pipe materials and thicknesses. Explore Tuf-Lok couplings to find the best size for your project.