This Swagelok® 3-way reducing Tee union connects one 3/8" OD tube to two 1" OD tubes. The 3/8" tubing connector is located on the center leg of the tee. The two 1" tubing connectors are on the ends of the long part of the tee. This 3-way reducing Tee union is made of stainless steel and includes nuts and ferrule sets. Nut threads are silver plated to prevent galling and seizing of the fitting when tightened.

Reducing Tee Unions are used when three dissimilar-size bare tubing ends need to be joined. All unions are made with the nuts facing each other.

These industry standard Swagelok compression-type fittings and components are precision manufactured and offer a gas-tight, metal-on-metal seal. They are available in standard fractional tubing sizes for making up stainless steel tubing. Polished surface finishes and high purity materials virtually eliminate these fittings as a source of system contamination.

They can be used for any fluid flow application and provide leak-tight service from vacuum to positive pressure. These fittings offer consistent gaugeability upon initial installation and are easy to disconnect and retighten reliably.

The two-ferrule design of these fittings are easy to install and no torque is transmitted to the tubing during installation. The two ferrules separate sealing and tube gripping functions; each ferrule is optimized for its function. Available Swagelok gap inspection gauges assure sufficient pull-up upon initial installation.

Swagelok tube fitting ends are rated to the working pressure of tubing as listed in the Swagelok Tubing Data PDF, available here for download.

Fitting specifications are shown in the second image.