With a Taco 006-BC4 Bronze 1/2" Sweat Connections, you do not need flanges in order to connect to copper pipe. If you are going from the pump straight to 1/2" copper, you can simply sweat the pipe directly onto the pump with no flange in between. Not all pumps work this way, so be sure to check what connection type your pump uses before making a decision whether or not to purchase flanges.
Taco pumps, including Cast Iron Taco Pumps and Bronze Taco Pumps such as the 006-BC4 can be found at www.supplyhouse.com
