home made tank vent drier

Here is Pic of a home made tank drier vent, that 2 lbs of silica gel inside that clear 4" pvc. on top are two check valves with a 1/4 lbs open rating. The top and bottom 2" reducers are not glued. Wiggle the unit out take inside remove the top pour crystal on cookie sheet heat in oven at 250 till blue again. Been on three months outside and still ok. About $70

That's a nice DIY desiccant vent.

I understand the fuel filter pre-filter but why the "T" and what are the plastic blk/wht pieces doing...Ck valves? I think I would have just used the pre-filter coming directly out the top as it should breath in and out.

You can't leave the top side of the gel open or it will collect moisture from the outside. This way the valves keep it closed until 1/4# of pressure in or out. The black tank sits out in the sun all day so it burps, at night when cools it wants air in. Otherwise the warm moist air coming cools and drops its water into the tank. Stole the idea from expensive gear box vents.

Just a quick question; how do you arrange check valves in line so that you get a two way flow of air? If they are put in the line in opposite directions, air can't go in either direction. If they are put in the same direction in line, they block in the same direction, no?

look at the Pic they are on T. Both vents are normally closed but will open in one direction with a 1/4 #. Tank breaths in and out through the silica. Been on three months and still blue

I see now - great setup. Thanks for clarifying. I’m going to try something similar.

Chainbreaker, great project! Any chance for a parts list? I'd like to do this on my bulk storage tanks as well

Triton said:

Chainbreaker, great project! Any chance for a parts list? I'd like to do this on my bulk storage tanks as well

Click to expand...

Not my project, its "Leok's" project. But thanks for reminding me that I still need to do this for one of my gensets.