Bauer auto-drain solenoid and P31 filter specs needed.

[PBcatfish]

Normal open results in the condensate being drained after the power is shut off.

But, there is a one-way valve going to the filter cartridge and a pressure maintenance valve after the filter cartridge. So the filter cartridge stays pressurised.

My older Bauer unit is set up differently. It has 2 NO solenoids. One drains the primary water trap before the final stage. The other drains the filter stack. On mine, both drain when the power goes off. I like your system better.

 

[Miyaru]

Take a picture and post it here.
There should be a condensate trap after the last stage, followed by the filterhousing. The checkvalve should be in between those. If there is none, I suggest you add one.

 

[PBcatfish]

Take a picture and post it here.
There should be a condensate trap after the last stage, followed by the filterhousing. The checkvalve should be in between those. If there is none, I suggest you add one.

I don't see a check valve there. When I get time to work on that unit again, I'll see about adding that check valve & also deleting the second unloader valve that dumps the P0 stack, or at least adding a manual valve in series with it. I've seen some rigs from Brownies that had the extra valve there. It looked like a slick style of rig.

In both cases, space is tight, so the upgrade is not going to be a 5 minute job.

Thanks for the info.