...
Finally, clear braid-reinforced tubing was used to set up the flocculator. This tubing was flexible enough to form a figure eight and very durable (Figure 2). 
Figure 2: Clear braid-reinforced tubing. (12/14/08)
The flocculator was set up vertically at ground level. Elevation differences between the flocculation tank and the outlet of the tube flocculator drive flow through the tube flocculator. A tee with one end open to the atmosphere was connected to the outlet. The tee can be elevated or lowered to control the flow rate through the flocculator.
...
Air often gets caught in the connection between the 1/4 line drawing water from the tank. To resolve this issue the peristaltice pump used to sample water from the sed tanks was used to provide pressure to remove air. Additionally the joint was sealed with tape to make it air tight (Figure 23). 
Figure 23: Sealed air tight joint. (12/14/08)
...