tee off elbow

trent_v

hello all, i’m adding a radiator into an existing hydronic system and changing up the main line a little. i have two questions first can i put a tee right after an elbow? and how would i go about adding a cast iron baseboard heater in the basement below the main and the boiler. the boiler is in the basement and the pump is on the return. the hot water comes out the boiler on an 1-1/2” pipe, runs most of the length of basement ties into a 1” pipe that goes one way back to the boiler and another direction back to the boiler. 

EBEBRATT-Ed

Post some pictures there are many ways to pipe a HW system. We have to see what you have.