Description

Overview

The 5/16 air brake union tee connects three matching 5/16-inch outside-diameter nylon air tubes through one compact T-shaped fitting. It lets a straight pneumatic line continue while adding a same-size branch, or allows two lines to feed a common run without threaded adaptors, compression nuts or loose olives.

Features

• Three equal push-in ports keep the same tube size through every connection
• Tee layout supports a straight run with a perpendicular branch
• Reusable collets release the tube when depressed
• Brass construction suits compact air-line installations

Specifications and Materials

Product type: DOT push-to-connect air brake fitting. Configuration: equal union tee. Connections: three ports for 5/16-inch OD nylon tube. Body material: brass. Each tube pushes directly into its matching collet, so no threaded connection or separate compression hardware is needed.

Part number: DQ64DOT05.

Review the manufacturer union tee specifications

Compatibility and Fitment

Measure all three tubes across their outside diameter before ordering. Each port must receive 5/16-inch imperial tube, which measures approximately 7.94mm. Do not substitute 8mm, 1/4-inch or 3/8-inch tube, as a nearby size may enter the collet but will not provide the intended retention and seal.

These cross-references show where this part replaces the part numbers and applications listed. Some installations may need minor changes. 1864X5

Related Parts

Use another union tee size when the existing air line does not measure 5/16 inch.

Compliance and Safety

Depressurise the complete circuit before cutting or disconnecting any tube. Make clean square cuts and remove scratched, flattened or heat-damaged material. Push each line fully into its port, then restore pressure gradually and inspect all three joints for leakage, movement and secure tube retention.

Trailer Applications

The 5/16 air brake union tee suits compatible trailer air brake, air suspension and auxiliary pneumatic circuits that need a same-size branch in a compact line. Its equal-port layout avoids an unintended reduction at the junction and keeps the branch aligned at 90 degrees to the main run.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Why Choose ICS Trailers

Because 5/16 inch sits between the more common 1/4- and 3/8-inch tube sizes, measure the line rather than judging it by eye. Send the old fitting markings and tube outside diameter if the size is difficult to identify.

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