For both the water and the gas/vacuum manifolds, we offer:
RR95540: Tubing for Manifold inlets 15 m x 8 mm
for connecting the water source/drain or gas/vacuum source to the single large quick connect fitting on the side of the manifold.
RR95535: Tubing for Manifold outlets 15 m x 6.4 mm
for connecting each of the (up to) 5 condensers to the smaller quick connect fittings on the top of the manifold.
Both sizes of tubing are Tygon.