I want/need to build a manifold for my set up and got to thinking, would it be better to use 1/2 inch PVC with tee's and elbows to accept the NPT/barb fittings, that would take up a lot of room inside my cooler or would it be better to use schedule 80 PVC and drill and tap the pipe for the NPT/barb fittings. With the first set-up I could add valves to isolate individual lines and add lines at a future date easily. With the sch. 80 set up, I could drill and tap additional ports as space allowed if I needed additional lines. I currently only have 1 line going to the pump here at the house as a test of the pump and tubing. ( Have to say, I'm impressed with 1.25 gallons of sap per tap per day and drawing 22 to 26 inches vacuum.) I will be building another for next season for a different property that will be a take down system with 3 to 7 lines depending on how the woods map out.