View Full Version : Air in DOS line

02/27/2017, 10:02 PM
How do i eliminate? I also have the ddr. All connections secure, connected to ddr = air mixed in line
Line directly into water bottle = no air

I wanna use my ddr!

03/01/2017, 09:47 AM
If you are getting air in your lines after purging the air out via the push buttons on the DOS then your lines are NOT secure. I would push the lines further up onto the dos and re-tighten the ferules. This is especially common when using 1/4" RODI style tubing but it can happen with silicone and vinyl tubing too if the tubing is pushed all the way up onto the bar and if the ferules are not tight enough.