A grooved fitting is a type of mechanical pipe fitting that uses a groove to connect two pipes together. The groove is created by a grooving machine, which cuts a groove into the end of the pipe. The groove is then sealed with a gasket, which is a rubber or plastic ring that is inserted into the groove. Grooved fittings are used in a variety of applications, including water, gas, and oil pipelines. They are also used in HVAC systems, as well as for fire protection systems. Grooved fittings are preferred over traditional pipe fittings because they are easier to install, require less maintenance, and are more reliable. Additionally, they provide a stronger connection than traditional pipe fittings, making them ideal for high-pressure applications. Grooved fittings are available in a variety of materials, including steel, stainless steel, brass, and copper.