Pipe Fittings Direct. 4 inch NPT threaded 90 deg malleable iron elbow
Supply Giant CNOM0034 FBA_BMNL0012 1/2"" 90 Degree Malleable Iron Elbow Fitting for High Pressures with Female Thread Connects and Black Finish" - Amazon.com
1/2" Tee Black Pipe Elbow Cast Iron Connector Industrial Steel Grey Fits Standard Half Inch Black Threaded Pipes Nipples and Fittings, Vintage DIY Furniture Clean and Seal Recommended 15098-1PK - Walmart.com