Air in DOS lines

[Kurt Hammel]

Does anybody else have a problem with their Apex DOS fluid lines sucking in air and stop metering fluid. Typically within a month of installing new fluid line on my DOS it will start sucking in air to the fluid lines. Does anybody have a solution to fix this problem?

 

[Tastee]

Plenty of folk retrofit John Guest fittings onto the DOS - search for that and you’ll find threads showing how that is done. I haven’t done it personally as I haven’t had too many issues. The tubing you use will affect your outcome and another tip is to soak the tube end in near boiling water before fitting and screwing it tight to improve the seal. I am currently using ADA tubing which is much better than the standard Neptune tubing (which I find is too stiff).