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The RLS 3051221800111 is a braze-free refrigerant copper press reducer coupling designed to connect copper piping of two different diameters without the use of a brazing torch. This one-piece fitting transitions from a 1-3/8 inch connection to a 1-1/8 inch connection, providing a leak-proof, mechanically secure joint. It is installed using a standard press tool, making the connection faster and more repeatable than traditional brazed joints. HVAC technicians and refrigeration professionals working on copper refrigerant piping systems are the primary users of this fitting.
This reducer coupling is suited for use in residential and light commercial HVAC and refrigeration applications where copper refrigerant lines of differing sizes must be joined. It is particularly useful in retrofit, repair, and new installation scenarios where open-flame brazing is restricted, impractical, or prohibited. The press fitting design supports consistent, repeatable connections across high-volume service work, helping reduce overall installation time.
Designed as an OEM-style press fitting replacement for copper refrigerant line connections requiring a 1-3/8 inch to 1-1/8 inch reducer in HVAC and refrigeration systems.
Installation should be performed by a licensed HVAC or refrigeration technician using a calibrated press tool rated for refrigerant-grade copper fittings. Refrigerant must be recovered and the system must be depressurized before making or breaking any line connections. Verify that pipe ends are clean, deburred, and fully seated in the fitting before pressing. Follow all applicable local mechanical codes and manufacturer press tool guidelines.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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