You will need 4 of these...
The John Guest female adapter makes connecting OD tubing to male NPT threads quick and easy. Manufactured in polypropylene with food grade EDPM O-ring, these fittings were developed for the filtered pure water market. Features: Push-fit Technology creates reliable, leak-free connections Used to...
www.freshwatersystems.com
For instructions, click on the link in post #3 in this Neptune Forums discussion by the user Wiretech, who originally came up with this mod. Also note, I cut the nubs off my DOS tubing connectors and used a liberal amount of Teflon paste on the threads.
Hi, Has anyone seen an adapter that will connect standard 1/4" tubing used in RO applications to the larger tubing used on the DOS? Thanks, Dennis
forum.neptunesystems.com