Keep pipes clean, speed up brazing, and reduce wasted nitrogen with this HVAC nitrogen flushing tool — quick to connect, simple to use, and built for accurate control. Key benefits Faster setup and work: quick-connect 1/4-inch coupling attaches to the outlet of a standard nitrogen pressure regulator so you can start rinsing and soldering in seconds. Accurate, stable control: designed for reliable nitrogen flow control to produce consistent flushing and brazing results while minimizing gas waste. Safer, cleaner joints: purges oxygen and contaminants from the pipe during brazing to reduce oxidation, prevent equipment failure, and extend pipeline life. Features and what they mean for you 1/4-inch quick connector: connects rapidly to the outlet of standard nitrogen pressure regulators; place the tool in the closed state and attach a standard 1/4-inch refrigerant hose for immediate use. 3-position scale (Rinse / Brazing / Off): a clear 3-point selector lets you switch quickly between rinse, brazing, and off positions to deliver the correct nitrogen flow for each task without guesswork. Inlet and maximum pressure ratings: designed around an inlet pressure of 50 psi and a maximum pressure of 200 psi to accurately control nitrogen delivery and maintain stable flushing/soldering performance. How it helps on the job Reduces rework and leaks by keeping the brazing zone free of oxygen and contaminants. Cuts downtime: fast connection and quick switching between modes make multi-joint jobs faster and more efficient. Lowers operating cost by limiting gas consumption to what’s needed for each stage (rinse vs. brazing). Practical use scenarios HVAC installation: flush refrigerant lines before brazing to remove oil, moisture, and debris, then switch to brazing mode for controlled nitrogen flow during soldering. Commercial refrigeration service: purge lines prior to fitting new sections to prevent oxidation and compressor contamination. Plumbing and metalwork: use for inerting metal pipelines before and during joining to achieve cleaner joints and longer-lasting connections. Compatibility and operation Connects to the outlet of a standard nitrogen pressure regulator. Uses a standard 1/4-inch refrigerant hose. Set the tool to closed when connecting hose; use the 3-point selector to choose Rinse, Brazing, or Off. Technical specifications Connector: standard 1/4-inch quick coupling for regulator outlet and refrigerant hose connection. Selector: 3-point position scale (Rinse / Brazing / Off). Pressure: inlet pressure 50 psi; maximum pressure 200 psi. This tool provides a straightforward, reliable way to control nitrogen during flushing and brazing, improving joint quality and reducing wasted gas without changing existing regulator or hose setups.