Parker D.O.T. Fittings: Compression vs. Push-to-Connect

While push-to-connect fittings typically cost more than compression fittings, quicker installation, less maintenance and less chance for leakage can make up for a higher purchase price. Additionally, the compact design of push-to-connect fittings is ideal for precise positioning in tight places.

Compression fittings are available in more sizes and configurations than push-to-connect fittings. Some compression fittings can support a higher PSI rating than their push-to-connect counterparts.

Compression fittings also require the use of tools to install, whereas push-to-connect fittings can be easily installed or removed without using tools, minimizing the chance of damaging equipment.

The nut on a compression fitting must be tightened correctly in order to create a seal and guard against leakage. With push-to-connect fittings, there are no compression nuts that need to be tightened. Simply pushing the fitting onto the hose or tube creates a leak free seal.

Compression fittings sometimes need to be retightened to prevent or to halt leaks. Push-to-connect fittings typically do not need readjusting in order to remain leak free.

When deciding which transportation fitting is right for your vehicle you must take into consideration:

• Pounds per square inch (PSI) pressure requirements
• Thread type needed
• Type of tube or hose that you are connecting the fitting to

Also refer to your owner’s manual for your specific application.

For a clear comparison of the transportation fittings reviewed in our prior blog posts “Selecting a Parker D.O.T. Approved Push-to-Connect Air Brake Fitting” and “Choosing Compression Transportation Tube & Hose Fittings,” please refer to the table below.

*All compression and push-to-connect air brake fittings are D.O.T. approved. 

Questions about Parker transportation fittings?

Posted by Linn Martinez