Push-to-connect is a type of fitting used in plumbing and pneumatic systems that allows for quick and easy connections between pipes or tubes. Users simply push the pipe into the fitting, and a series of internal grips secure it in place without the need for additional tools or adhesives. This design simplifies installation and maintenance. These fittings are commonly made from materials like plastic or metal and are used in various applications, including airlines, water supply, and industrial machinery. Their reliability and ease of use make them a popular choice for both professionals and DIY enthusiasts.