The 1-1/2" x 1" Aluminum Coupler x Female – Type D is a high-quality pipe fitting designed to connect a 1-1/2-inch pipe to a 1-inch pipe with a female connection. Made from durable aluminum, it offers excellent corrosion resistance and lightweight strength. The Type D designation ensures compatibility with standard system components. This coupler provides a secure and reliable solution for transitioning between different pipe sizes in various industrial, plumbing, and HVAC applications, ensuring efficient fluid or gas transfer.