How to Assemble Tube Fittings (1″ and Under) | Tech Tips | Swagelok [2020] - YouTube

Welcome to this Swagelok How-To Video.

Here's what you'll need to perform the procedure shown in this brief video:

Two open ended wrenches Or one open-end wrench and a vise

A Swagelok gap inspection gauge A tube cutter or a hacksaw

A file or a Swagelok deburring tool A marker

The Swagelok Tube Fitting is designed to provide a leak-tight seal for pressures up to the

suggested allowable pressure rating of the tubing.

It is a two-ferrule, mechanical-grip, hinging-colleting type connection consisting of a fitting body,

a nut, a front ferrule, and a back ferrule.

Proper tubing preparation is important when installing tube fittings.

Two common tools are used to cut tubing.

The tube cutter and a hacksaw.

Once the tube is cut, burrs created during the cutting process must be removed using

a Swagelok deburring tool, or a file.

This video focuses on manual assembly of the one inch and under Swagelok tube fitting end

connection.

It is important to note that Swagelok tube fittings come to you completely assembled,

finger-tight, and ready for immediate use.

The tube fittings should not be disassembled prior to installation.

Disassembly can result in dirt or foreign material getting into the fitting, which can

interfere with sealing.

The typical assembly is a three-step procedure.

These instructions apply both to traditional fittings and to fittings with the advanced

back-ferrule geometry.

First, fully insert the tubing into the fitting and against the shoulder, rotate the nut finger-tight.

Next, mark the nut at the six o'clock position.

Marking the nut at six o'clock leaves no doubt as to the starting- and ending positions.

Finally, while holding the fitting-body steady, tighten the nut one-and-one-quarter turns

to the nine o'clock position.

For one-sixteenth-, one-eighth-, and three-sixteenth-inch, and two, three, and four mm tube fittings,

tighten the nut only three quarters turn to the three o'clock position.

Swagelok tube fittings are recognized for their gaugeability.

On initial installation, the Swagelok gap inspection gauge assures the installer or

inspector that the fitting has been sufficiently tightened.

To use the gauge, position it next to the gap between the nut and the body.

If the gauge will not enter the gap, the fitting is sufficiently tightened.

If the gauge will enter the gap, additional tightening is required.

A benefit of using Swagelok tube fittings is their ability to be disassembled and reassembled

many times while retaining the leak-tight seal.

Always depressurize the system before disassembling a Swagelok tube fitting.

Prior to disassembly, mark the tube at the back of the nut; mark a line along the nut

and fitting body flats.

Use these marks to ensure that you return the nut to the previously pulled-up position.

Insert the tube with preswaged ferrules into the fitting until the front ferrule seats

against the fitting body.

While holding the fitting body steady, rotate the nut with a wrench to the previously pulled-up

position, as indicated by the marks on the tube and flats.

At this point, you will feel significant increase in resistance.

Tighten the nut slightly.

Do not use the Swagelok gap inspection gauge with reassembled fittings.

Also, do not mix or interchange parts with those of other manufacturers.

Visit Swagelok.com for additional product information.

Thank you for watching.

We will continue to develop videos like this to help you get the job done.

Get more information by watching our other videos or contacting your authorized sales

and service center.