Comments about Platypus Big Zip SL Drinking Tube Kit:

This item was used to add a seperate water supply to a Platypus gravity filtration system. By removing the screw cap and relacing it with the male end of the Platypus qick disconnect it can be installed after the filter to the female half of th"QD" which also serves as a shut off. The female end of the "QD" is attached to the line via plastic y.