DOS tubing?

  • Thread starter Thread starter MSB123
  • Start date Start date
  • Tagged users Tagged users None
Yup, best solution by far for those leaky DOS compression connectors... just make sure you use Teflon paste for the 1/8” threads.

2D01BFDC-9831-4950-A148-3A8D08E1E2CA.jpeg

Is there a write up of how to do this and/or links to the connectors you used? TIA
 
Is there a write up of how to do this and/or links to the connectors you used? TIA

You will need 4 of these...

https://www.freshwatersystems.com/products/john-guest-female-adapter-nptf-polypro-1-4-x-1-8-nptf
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.

https://forum.neptunesystems.com/showthread.php?13511-RO-tubing-to-DOS-connection
 
Last edited:
Is there a write up of how to do this and/or links to the connectors you used? TIA
You will need 4 of these...

https://www.freshwatersystems.com/products/john-guest-female-adapter-nptf-polypro-1-4-x-1-8-nptf
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.

https://forum.neptunesystems.com/showthread.php?13511-RO-tubing-to-DOS-connection

Any Issue with the metal bushing?
 
I plan on doing this mod when my DOS pumps come in. After I modify it can I just use regular 1/4" RO tubing to dose my trition elements?
 
I plan on doing this mod when my DOS pumps come in. After I modify it can I just use regular 1/4" RO tubing to dose my trition elements?

Yup, that’s the purpose of installing these John Guest fittings... it’s so you can use the 1/4” OD RO tubing.
 

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