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. Eliminates the need for complex dial adjustments or flow indicator valves. Extend equipment life: Facilitates smooth nitrogen flow during purging and brazing, removes refrigerant, moisture, and debris, prevents oxidation, and keeps pipes clean to help extend the service life of HVAC systems and metal piping. Precise and efficient: Provides accurate nitrogen flow control for consistent purging and welding performance, reducing gas waste. Durable and compact: Constructed with all-metal materials for enhanced durability. Compact design allows for easy storage in tool bags, toolboxes, or pockets. Resists wear and damage under normal use. Ergonomic design: Features a comfortable knob for easy operation. Material: Metal Color: As shown Note: Installation guide not included. Professional installation is recommended. Verify product compatibility before use. Package Contents: 1 x Nitrogen Purge Tool (no additional accessories included) Note: Lighting and display settings may cause slight color variations between the product image and actual item. Measurement may vary by +/- 1-3 cm due to manual measurement.