This Legris 3115 inline connector is a nylon and nickel-plated brass push-to-connect fitting for connecting a tube to a female threaded connection in a straight run. It has a push-to-connect tube connection on one end and male National Pipe Taper (NPT) threads on the other end for connecting to female threaded pipes. The NPT threads create a tighter seal than straight threads. This fitting is made of nylon and nickel-plated brass — nylon for strength and flexibility, abrasion resistance, light weight, and resistance to crushing and cracking, and nickel plating on its brass sub-base for ferromagnetic and corrosion resistance, strength at high temperatures, and toughness and ductility at low temperatures. This fitting meets Department of Transportation (DOT) FMVSS 571.106 technical specifications. This inline connector 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.