Create a strong connection without heating, flaring, or soldering. These fittings have a single sleeve (ferrule or olive) that bites into tubing as you tighten the nut. Both the nut and sleeve are included. Also known as single ferrule fittings, they are easier to install than yor-lok fittings which have two ferrules. They’re often used in low to medium pressure applications, such as plumbing and compressed air systems, which don’t require the strength of a yor-lok fitting. Compression fittings for copper tubing can withstand higher pressures than compression fittings for plastic and rubber tubing. Made of brass, they have good corrosion resistance.

To connect a compression fitting to tube, slide the nut and sleeve onto the tube. Then push the tube into the fitting until it butts against the back of the fitting. Tighten the nut onto the fitting to compress the sleeve.

Threaded connections can be taken apart as needed for maintenance and repair.