I have an apparatus with a wet and dry section. Water can enter the dry section which is okay unless it reaches a level of approximately 2". The fan section is pressurized. I am looking for a breather that does now allow air to be sucked into the fan chamber, however if water enters the chambers and rises above 2", then a float sensor will cut off the electricity and water will escape through the breather.
The wall of the tank is 1/4" and then the wall of the abutting fan chamber maybe another 1/4" thick. Looking for a breather with a screw and nut combination.