Introduction to Swagelok Tube Fittings

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By JeffreyThurber

Swagelok Tube Fittings are the industry standard. Swagelok has a rich history in innovation, and is recognized worldwide for its superior Tube Fitting line. If you are looking for the best in the design, installation and maintenance of fluid systems, Swagelok will meet and exceed all your Tube Fitting requirements. Swagelok Fittings address the four most costly and critical issues of fluid systems: improper installation, vibration, leakage, thermal shock, providing you with a reliable, gaugeable product with excellent durability, and simplified maintenance. The Swagelok Fittings are available in a range of material and configurations (from 1/16 to 2inches, and 2-50mm) to meet your every need.

Swagelok offers easy to install, live-loaded, two-ferrule design, with a gap inspection gauge that provides instant assurance that a fitting has been sufficiently tightened on installation. The gap inspection gauge gives the installer or inspector immediate feedback that a fitting has been sufficiently tightened. An additional advantage is that no torque is transmitted to tubing during installation. Swagelok Fittings can easily be installed with hand tools, and are also easy to disconnect and retighten, making maintenance a breeze. Swagelok developed and patented the original two-ferrule Tube Fitting innovation, which ensure reliable, leak-tight connections in thousands of diverse applications. Swagelok Tube Fittings are consistently gaugeable – this minimizes installation error, and assures easy maintenance.

In addition, a patented case-hardening process applied to the back of the ferrule ensures that Swagelok Tube Fittings can be used on a range of thick- or thin-walled, hard or soft tubing, which minimizes the effects of vibration, and resists the effects of pressure and thermal cycling. The vibration resistance is provide by the Swagelok Tube Fitting design which features a protected stress riser through the patented back ferrule geometry, which reduces the damage caused by system conditions, and reduces the damaging effects of system dynamics. Provided you use good quality tubing, Swagelok Fittings will not leak, even under rugged conditions. Gas seal is assured by a burnishing or polishing contact by the front ferrule with the fitting body and tube – this creates a concentrated zone of contact, and allows for superior sealing over a wide range of system conditions.

Swagelok Tube Fittings feature controlled-phased sequential pull-up – in simple language, this means that the Fitting components work together in harmony, so that during pull up there is a design sequence of action from front ferrule to back ferrule. The back ferrule features patented recessed and contoured geometry to create the hinging and collecting action that grips the tube. This means that more material from the back ferrule comes into contact with the tube adjacent to the tube grip – which provides direct and axial support to the tube gripping function. This ensures that Swagelok Fittings have a robust tube grip – a key element in the reliable performance of their Fittings.

Swagelok Tube Fittings are available in a variety of types, included Compression Fittings, Flare Fittings, Bite-type Fittings and Mechanical Grip-Type Fittings. They are available in a wide variety of materials including carbon steel, brass, controlled 316 stainless steel, alloy C-276, alloy 400, and alloy 600 for enhanced corrosion resistance. Swagelok Fittings are recognized worldwide, and have received approvals from numerous Independent third party agencies, including the US Navy.

Most importantly, the customer is assured of back up and support when using Swagelok Tube Fittings, and can rely of Swagelok’s advice for every aspect from technical information, product selection, applications decisions, to maintenance and trouble-shooting. Authorized Swagelok sales and service representative have access to data and technical service engineers who can provide necessary insight and support to any project. In addition, Swagelok Fittings come with a limited Lifetime Guarantee. Swagelok Fittings provide customers with excellence in every aspect of Tube Fitting – from purchase, to installation, to maintenance.

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