The McAlpine T18 is a push-fit straight overflow connector that is used in plumbing systems to connect an overflow pipe to a waste pipe. The T18 connector is designed to be used with plastic pipes, such as those made of PVC or ABS, and features a push-fit connection that allows for quick and easy installation without the need for special tools or adhesives. To use the T18 push-fit connector, the connector is simply inserted into the end of the overflow pipe, and then pushed into the end of the waste pipe until it clicks into place. The connector is designed to create a watertight seal between the two pipes, which helps to prevent leaks and ensure proper drainage. It's important to note that the T18 push-fit connector is designed specifically for use with plastic pipes and may not be compatible with other types of piping materials, such as copper or steel. Additionally, it's important to ensure that the T18 connector is used in accordance with any local plumbing codes and regulations to ensure proper installation and safety. ・ Available in 1¼" and 1½" sizes