Rheem SP12112G Brass Drain Valve For best results, use only Rheem replacement parts for repairing your Rheem Water Heater Body Material: Brass, Shank Length (in.): 2-1/4, Tank Fitting Size - NPT (in.): 3/4, Garden Hose Fitting Size - NHR Nominal (in.): 3/4 Garden Hose Fitting Size - Actual (in.): 1-1/16, Handle Type: screwdriver