Model P1, Rev A, SALES B KIT FOR PRODUCT CODE: P19-S1D7-17000000A; Single Stage Pressure Reducing Regulator; 1/2" Size, Cv=0.20; 316L Stainless Steel Body, 316L Stainless Steel Spring Chamber; 302 Stainless Steel With Tefzel Ring Diaphragm, PCTFE Seat, 316L Stainless Steel Seat; Retainer, 316L Stainless Steel Poppet, Inconel X-750 Poppet Spring, Port Configuration D;