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The RLS LLC 3051100400111 is a push-to-connect reducer fitting designed for use in refrigerant line applications. It transitions between two different tube sizes, accepting a 5/8-inch connection on one end and a 1/4-inch connection on the other. The Rapid Locking System press-fit design eliminates the need for brazing or soldering during installation, allowing technicians to complete connections quickly and consistently. This fitting is sold as a single unit and is intended for installation by licensed HVAC technicians working on refrigerant piping systems.
This reducer fitting is suited for residential and light commercial HVAC applications where refrigerant line sizing changes are required between components. It is a practical choice in retrofit and new-installation scenarios where a tool-free or low-torch method is preferred. The RLS push-connect system is recognized as a time-saving alternative to traditional brazed fittings in split-system and mini-split refrigerant line work.
Designed as an OEM-style push-connect reducer fitting for use in refrigerant line assemblies requiring a 5/8-inch to 1/4-inch tube size transition.
Installation should be performed by a licensed HVAC technician in accordance with applicable mechanical codes. Recover and isolate refrigerant from the system before cutting or modifying any refrigerant lines. Follow the RLS tool and insertion-depth requirements specified by the manufacturer to ensure a leak-free connection. Verify the joint with a leak detector after system recharge.
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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