2-1/2" Galvanized Straight Tee (NPT Thread) | Galvanized Fittings
1/2" Male Pipe Thread - 1" PVC Slip Tee Fitting | The Bucket Company
Amazon.com: (6 Pack) Cruzadel PVC Tee Fittings for Threaded Poultry Cups Chicken Waterer - Schedule 40 PVC 1/2 inch Slip X 1/2 inch Slip X 1/8 inch FPT : Patio, Lawn & Garden