I am about to purchase some black galvanized pipe to set my garage up this weekend. I notice in many pictures and discussions that everyone recommends that the air line going away from the compressor rise at an angle to keep water/moisture going back to the compressor side. I have maybe a silly question but I’m going to ask anyway. If I buy T unions or 90 deg elbows, how do I get the line to go at an angle when the T’s are 90? To me, thats either parallel to the garage floor or perpendicular to the floor. I hope this makes sense.