This 6.3580mm Tube Weld Socket End Feed Reducer Coupler is a pure copper pipe fitting connector designed for air conditioning and refrigeration installations. It provides a socket weld end feed reducer to join copper tubes from 42 mm to 38 mm, delivering a reliable, leak tight connection for HVAC piping. Key benefits Reliable, leak resistant joint: copper construction and socket weld design offer a durable connection for refrigerant piping. Size down from 42 mm to 38 mm: enables a precise reduction in tube diameter where a branch or connector is required. Pure copper material: offers thermal conductivity, corrosion resistance, and long service life in HVAC systems. Easy professional installation: designed for weldable socket connections, suitable for standard HVAC workflows. Consistent performance in cooling applications: optimized for air conditioning and refrigeration environments. Key attributes Functionality: Weld socket end feed reducer coupler for copper tubes. Inlet to outlet sizes: 42 mm to 38 mm reduction. Material: Pure copper. Application: Air conditioning and refrigeration pipework. Compatibility: Copper tubes with 42 mm and 38 mm diameters. Performance: Durable and corrosion resistant, suitable for professional HVAC service. Use cases HVAC installation: Connect a 42 mm main supply line to a 38 mm branch line in a splitsystem air conditioner or similar cooling equipment. Retrofit or : a damaged 42 mm section with a 38 mm reduction in existing copper piping within an air conditioning or refrigeration setup. Piping assemblies in appliances: Integrate into copper piping networks in HVAC units and condensers where a 42 mm to 38 mm reduction is required with a socket weld connection. Notes Designed for professional use with welding to install; ensure proper cleaning and fitting procedures to achieve a secure, leak joint. This fitting is described in product listings as a 6.3580mm Tube Weld Socket End Feed Reducer Coupler and is intended for air conditioning and refrigeration applications requiring a 42 mm to 38 mm reduction in copper tubing.