This Legris 3106 inline union is a nylon push-to-connect fitting that connects two tubes. It has push-to-connect tube connections on both ends. This fitting is made of nylon, which is very strong and flexible, has excellent abrasion resistance, is lightweight, and resists crushing and cracking. The fitting is suitable for handling pressures up to 290 psi (20 bar), has an operating temperature range of -20 to +80 degrees C (-4 to +176 degrees F), and has a vacuum capability of 755 mm Hg. This fitting meets Restriction of Hazardous Substances (RoHS) and International Organization for Standardization (ISO) 14743 technical specifications. This inline union is suitable for use in air, water, oil, chemical and food applications.

Tube fittings are components used for connecting, branching, terminating, and changing the direction of tubing in pneumatic and hydraulic systems. They are made of brass, stainless steel, PBT (polybutylene terephthalate), and other materials that resist corrosion and wear. Tube fittings have various types of connections, including threaded, welded, barbed, and push-to-connect (also called one-touch). Push-to-connect connections do not require tools or sealants. Tube fittings are used in various applications, including machine tools, airplane and truck controls, and automated production lines, among others.

Parker Hannifin manufactures electromechanical, hydraulic, and pneumatic motion technologies and systems for fluid handling, filtration, sealing and shielding, climate control, process control, and aerospace applications. The company, founded in 1918, is headquartered in Cleveland, OH.