REFRIGERATOR DRAINLINE
When I buy a new rig the drain hose from the Ref. is always routed outside through the ref. vent panel. Every time I take the panel off I have to pull that little ringed tube out then put it back whe...
Forum Discussion
Larmoll wrote:fpresto wrote:Larmoll wrote:
RV fridge drain tube should #1 have a plug in the end of the hose, believe it or not but that is a check valve.
I can't speak for Dometic but that is not the case for Norcold. I have a replacement 4 pack in my hand right now and they are certainly not a check valve. You can easily blow through them from either side.
That's what I thought too until I replaced it. It is not a check valve as we know it. That small hole in that plastic cap is sized to restrict air flow. Known in the engineering world as a check valve.
Air molecules are smaller than water molecules and more compressive. If water can get through, air can get through.
