The grooved-end piping system is the most versatile, economical and reliable piping system available. It is faster to install than welded systems, while providing unique design versatility. There are a variety of coupling sizes and styles for almost any piping application. Their couplings provide designers with versatility not found with other pipe-joining methods and can be combined to allow for thermal growth within the system. Additionally, the use of three consecutive flexible couplings reduces noise and vibration while eliminating costly specialty noise dampeners. The system is designed for roll-grooved or cut-grooved standard pipe or roll-grooved light wall pipe. A complete line of grooving tools are available to quickly and efficiently groove pipe in the shop or at the job site.