Features: Purge Setting=25-35 scfh@ 50psi,Braze setting=3-6scfh@ 50psi. 50Psi Inlet Pressure: Be sure you have enough pressure to purge and braze properly.Nitrogen Purge Tool is design to regulate proper nitrogen flows with a 50psi inlet pressure.Most pressure of 200psi. Quick Changes Dialings: The nitrogen purge tool have a quick and easy 3click position dialings.Quickly switches between Purge,Braze,and Off setting to get the correct amount of nitrogen flows for each one. No fumbling with flows indicators valves. Robusts Design: The Nitrogen Purge Tool is design to be toughly and durability.Throw it into your tool bag.It will not break like nitrogen flows meter. Standard Fittings: Quickly attaches to the outlet of a standard nitrogen pressure regulator.Set the purge tool to off,connect standard 1/4in refrigerants hoses,and in second you is ready to purge and braze. Specifications: Component:Brass Size:Approx.7.62x2.8cm/3x1.1in 1/4in Male Flare7/16in-20 Package Includes: 1pc Nitrogen Flows Regulator note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.