3 point position dial: This nitrogen purge tool features a user friendly 3 point position dial, allowing you to effortlessly switch between purging, brazing, and shut off settings for nitrogen flow. 1/4 inch port connection: Connects to standard nitrogen pressure regulators with a 1/4 inch port, enabling quick flushing and brazing tasks with a standard hose attachment. Enhanced functionality: Facilitates smooth nitrogen introduction into pipes during purging and brazing, effectively removing debris to prevent oxidation and equipment failure. Stable and accurate control: Operates at an inlet pressure of 50 psi and a maximum of 200 psi for precise control over nitrogen flow, stable results while minimizing gas wastage. Application scenarios: Purging and brazing copper or stainless steel pipework in HVAC or plumbing to remove air and moisture before joining. Quick flushing of lines during installation to clear debris or moisture and prepare for brazing. On site brazing tasks requiring rapid switching to purge, brazing, and shutoff to prevent gas leakage after completing a joint.