Uniweld NV1 NitroVue Nitrogen Flow Indicator 1/4″ Flare HVAC Brazing Purge Tool
TheUniweld NV1 NitroVue Nitrogen Flow Indicator is designed to simplify nitrogen purging during the brazing of copper tubing in HVAC and refrigeration systems. Purge at 20+ SCFH, Reduce to 3–5 SCFH While Brazing to conserve nitrogen and maintain proper system protection.