Product Description
The SUPCO tfxnpb is a nitro purge boot designed for use during refrigerant line brazing operations in HVAC and refrigeration work. This accessory fits over service valves or line connections to allow nitrogen to flow through the system while brazing, preventing internal oxidation scale from forming inside copper tubing. Oxide scale is a leading cause of TXV and metering device fouling, compressor contamination, and premature system failure. HVAC technicians and refrigeration mechanics use this tool as part of standard nitrogen purge procedure during new installations and major repairs.
The tfxnpb is suited for residential and light commercial HVAC and refrigeration applications where nitrogen-assisted brazing is required. It is used during the installation or replacement of refrigerant line sets, coils, and other brazed copper assemblies. Proper nitrogen purging during brazing is widely recognized best practice and is referenced in ASHRAE and ACCA installation guidelines. This boot simplifies the purge setup by providing a secure, repeatable connection point for the nitrogen supply during torch work.
Key Features
- Enables nitrogen purge during brazing to prevent internal copper oxidation
- Designed for use on refrigerant lines and service valve connections
- Supports compliance with nitrogen-purge brazing best practices
- Compact accessory for field use by HVAC and refrigeration technicians
Compatibility
Designed as an OEM-style accessory for use in residential and light commercial HVAC and refrigeration brazing applications where nitrogen purging is required.
Installation Notes
Installation and use should be performed by a licensed HVAC or refrigeration technician. Ensure all system pressure is relieved and the refrigerant circuit is properly recovered before beginning any brazing work. Connect a regulated nitrogen supply through the purge boot and maintain a low positive flow rate through the tubing during the brazing operation. Do not exceed the rated pressure of the boot or the connected system components.
Technical Specifications
-
Application: Nitrogen purge during refrigerant line brazing
Standard Information
-
Brand: SUPCO
-
Manufacturer Part Number: tfxnpb
