Swivel fittings for compressed air lines

Swivel fittings for compressed air lines
(Last Updated On: July 31, 2019)

A swivel fitting is usually an elbow, and the part of that fitting that connects to the incoming air line can be rotated after the threaded part of that fitting is screwed securely into a component. This allows the air line connecting part to be rotated to it’s optimal position for plumbing the air to the fitting, and ultimately to whatever the fitting is threaded into.

Swivel Fittings

Swivel fittings are (for the most part) not designed to provide continuous rotation. For example, if the air line coming to the fitting is attached to another component that is dynamic, moving continuously, then the swivel portion of the elbow fitting could be rotating continuously as the component connected to it moved.

This would result in fairly rapid fitting failure.

If you have a situation where you need to plumb air to a moving component, talk to your fitting supplier about using a Rotary Fitting in this application. A rotary fitting is one that’s designed to allow continuous, and often high speed, movement of the fitting to accommodate air line movement due to the operation of the machine.

Just a reminder that a swivel fitting is designed to allow the installer the ability to turn the hose port to the most convenient location, for ease in plumbing up the fixture or machine with air lines.

Swivel fittings for air compressor

A swivel fitting is usually an elbow, and the part of that fitting that connects to the incoming air line can be rotated after the threaded part of that fitting is screwed securely into a component. This allows the air line connecting part to be rotated to it’s optimal position for plumbing the air to the fitting, and ultimately to whatever the fitting is threaded into.

The typical swivel fitting is not a dynamic, rotation device. In other words, if the fitting is installed into a boss that rotates, and the supply line to that fitting is fixed, then very soon your compressed air fitting will fail.

Assorted air fittings Compressed Air Fittings

If you need to install a compressed air line to a moving object, and as a result of that movement the supply air line will cause the elbow fitting to rotate regularly, then the choice fitting for that installation is a ROTARY UNION, not a swivel fitting.

Swivel fittings are (for the most part) not designed to provide continuous rotation. For example, if the air line coming to the fitting is attached to another component that is dynamic, moving continuously, then the swivel portion of the elbow fitting could be rotating continuously as the component connected to it moved.

This would result in fairly rapid fitting failure.

If you have a situation where you need to plumb air to a moving component, talk to your fitting supplier about using a Rotary Fitting in this application. A rotary fitting is one that’s designed to allow continuous, and often high speed, movement of the fitting to accommodate air line movement due to the operation of the machine.

Hello, I am Bill, the Compressed-Air-Man. I have years of experience in industrial and residential compressed air applications, air compressors and general pneumatics. I created this site to help professionals, students, and DIYers understand and properly implement and maintain compress3ed air systems.

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