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The RLS 399021191140 is a 7/8-inch refrigerant press jaw rated at 19kN of pressing force, designed for use with compatible RLS press tooling systems. This jaw is used to form leak-free pressed connections on refrigerant-grade copper tubing without open flame, eliminating the need for brazing in applicable installations. HVAC technicians and refrigeration mechanics rely on press-fit jaw sets like this one to complete refrigerant piping connections quickly and consistently. The jaw profile is sized specifically for 7/8-inch tubing and delivers the rated 19kN force required to properly seat RLS-style press fittings.
This press jaw is intended for use in refrigerant line set installations and service work in residential and light commercial HVAC applications. It is a replacement jaw for technicians who need to restore a full jaw set or replace a damaged or worn jaw. Press-fit refrigerant connection tools are increasingly common in new construction and retrofit work where flame-free installation methods are required or preferred by code or building management guidelines.
Designed as an OEM-style replacement jaw for RLS press tooling systems that accept 19kN jaw inserts for refrigerant applications.
This jaw is installed and removed by a licensed HVAC technician or refrigeration mechanic. Ensure the press tool is fully powered down and depressurized before swapping jaw sets. Verify that the jaw is fully seated and locked in the tool head before initiating any press cycle. Follow the tool manufacturer's operating instructions and applicable mechanical codes when making refrigerant piping connections.
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