water in air system

[Joe Rhea]

I'm getting a lot of water showing up in the air supply lines to the stairway slide and horn. Both solinods are screwed up due to water. I blow the tanks frequently and get very little moisture. I replaced the air drier filter when I bought the coach with a after market cartridge instead of a OEM.I have ordered a oem filter to replace the after market. Perhaps someone could share some light as to what is happening.

[Neal E Weinmann]

Do you hear the purge valve on the drier exhausting periodically when the engine is running?

[Joe Rhea]

yes
The relief valve on the drier works. The only thing I can think of is the air is bypassing inside the filter.