Easy to use: Connect a standard 1/4" refrigerant hose and a standard nitrogen pressure regulator to quickly switch between purge, braze, and close modes. No dials or flow indicator valves to fumble with. Extend the service life of HVAC equipment: Enables smooth nitrogen flow into pipe fittings during purging and brazing. Removes refrigerant, moisture, and debris. Helps prevent oxidation and equipment failure. Keeps pipes clean and extends the life of metal piping, potentially reducing repair costs. Precise and affordable: Delivers precise nitrogen flow control for stable and accurate purging and welding results, minimizing gas waste. Sturdy and durable: All-metal construction. Compact design resists wear and damage. Easily stored in tool bags, tool boxes, or pockets. Comfort and peace of mind: Ergonomically designed knob for comfortable operation. Material: Metal Color: As shown Note: Installation guide not included. Professional installation is strongly recommended. Please verify the item meets your requirements before purchase. Product design may vary slightly between batches due to updates. Minor differences in color or appearance do not affect functionality. Package Contents: 1 x Nitrogen Purge Tool (Other items not included) Note: Lighting and display settings may cause slight color variations between the product image and actual item. Measurement error allowance: +/- 1-3 cm.