Rheem AP12231B-1 Full Flow Drain Valve, Brass For best results, use only Rheem replacement parts for repairing your Rheem Water Heater Body Material: Brass, Overall Length (in.): 3-3/4, Tank Fitting Size - NPT (in.): 3/4 Kits which contain this part: SP12231B Garden Hose Fitting Size - NHR Nominal (in.): 3/4, Garden Hose Fitting Size - Actual (in.): 1-1/16, Handle Type: Lever