Model "P3", SALES B KIT FOR PRODUCT CODE: P39-S3F7-1500000MA; Two Stage Cylinder Gas Pressure Reducing Regulator; 1/2" Size, Cv'=0.20; 316l SST Body, 316l SST Spring Chamber; 302 SST W/Tefzel Ring Diaphragm,Tfe Seat,316l SST Seat;Retainer,316l SST Poppet,Inconel X-750 Poppet Spring,Port;Configuration "F";Cleaned For Oxygen Service Per Spec #S-1134