Nitrogen Regulator Valve Kit 0-800PSI for HVAC with 60in Hose CGA580 Inlet Connection 1/4in Male Flare Outlet Connection. The CGA-580 air inlet joint is suitable for standard nitrogen, argon, helium and inert gas storage tanks of any supplier. The 1/4in male thread flare outlet connection is suitable for HVAC inflation hoses and is used for pressure inspection and purging of HVAC units. The 60in long hose can provide you with a safe distance to avoid injury. The nitrogen regulator is made of brass, with a long lasting brass piston and diaphragm design, and an upgraded appearance processing to maintain the appearance for a long time. The accurate thread design ensures high sealing performance and prevents air leakage. The nitrogen regulator valve allows you to adjust smoothly and accurately through the T shaped handle, preventing wear and tear, and the output pressure is 0-800PSI. The connection part of the HVAC nitrogen regulator adopts a filtration structure, which can effectively prevent impurities in the nitrogen tank from entering the instrument interior along with the airflow, ensure the normal operating of the instrument, and prolong the service life of the instrument.