A copper reducing coupling is a type of pipe fitting that joins two copper pipes of different diameters, providing a secure, leak-free transition between them. It is used in plumbing and HVAC systems, such as for potable water, air conditioning, and refrigeration, to connect a larger pipe to a smaller one. These fittings are made of copper, a durable and corrosion-resistant material. Need larger quantities? Contact us for bulk pricing and availability.