A booster is a pvc tank that looks close to abody of a releaser. You run a few main lines into it and have one big line leaving the booster to carry the sap down to the releaser. No manifolds and no two line system. If you are doing a bunch of diffrent sections this is ok like 3-5 hundred, after that you would have to run another single line from the release to the next booster and so on depending on line size and vac pump. The two line system(wet-dry) is way cheaper to run if you have 500 or more tap system to put in in my opinion and if sized right it will maintain better vacuum through the whole system.
Blaisdell's Maple Farm
started on a 2x2 pan in 2000 and now
custom built oil fired 4x12 arch by me
Thor pans Desinged by Thad Blaisdell
4600 taps on a drop flue 8-4 split