VN-650 Nitrogen Purging Regulator is designed or controlled nitrogen gas，pressure test 650 psi settings.Easy flow control by rotating the knob Advantages:1/4" Male Flare outlet standard fit for most nitrogen tanks, easy to install and operate,Control the nitrogen flow and pressure to achieve the desired purge effect(TST、PRG、BRZ 、OFF) MATERIAL：Designed with a solid and durable brass body, it has corrosion resistance, pressure resistance and stability, is not easy to wear or break, and can maintain stable performance during high-pressure nitrogen purging processes VN-650 Nitrogen Purging Regulator Flow in applications such as:Used for pressure testing, and leak detection,HVAC/R systems for purging;Welding and brazing processes to prevent oxidation;Inerting sensitive systems or pipelines SERVICE：We value your shopping experience and want to ensure that you are satisfied with the product. If you encounter any problems during use, we are very willing to help you