"ITEM REGULATES LIQUID FLOW FROM 5.51 TO 6.09 GPM THROUGH INTERNAL ORIFICE AND STEPPED DIAMETER PASSAGE; ENTRANCE 0.3583 TO 0.3593 IN. DIA,EXIT 0.706 TO 0.712 IN DIA; HEXAGON TIGHTENING SURFACES 1.38 IN. ACROSS; EXTERNAL THREADS 0.562 IN. DIA AT ENTRANCE END,1.062 IN. DIA. AT EXIT END; INTERNAL THREADS ON EXIT END 0.750 IN. DIA,0.50 IN. LG."