Nitrogen Regulator set-up for recharging of extinguishers. Regulator has a spring type (re-seating) safety relief, CGA580 inlet connection,1⁄4” NPT female outlet, high strength rubber diaphragm and a rugged all metal body. Comes with part number NITA and a one year factory warranty. Outlet pressure 0-500 PSI. Hose not included.