Automatic air tank drain valves

[Cindy_and_Steve]

I tried to drain the water from the air tanks on our RV and I couldn’t find the drain valves. No valves to turn and no lanyards to pull. On the tanks, where drain valves should be, are some sort of gizmo with an electrical connection. Could they be some type of electric drain valves? If so, how do you operate them, or are they automatic?

[wolfe10]

AND, what chassis. The air tank drains are part of your chassis, not coach.

Thanks.

[Cindy_and_Steve]

craig7h wrote:
Cindy and Steve

It would be very helpful if you would have told us what unit you have. Like make model year that kind of thing.

Also you have the availability to put that information in the signature block.

I screwed up when I was registering on this site and I didn’t make a signature with that info. Now I have searched and clicked the help button but can’t find where I go to do that. Also can’t figure how to post pictures.

The coach is a 40’ 2000 Newmar London Aire.

[Cindy_and_Steve]

JRscooby wrote:

MountainAir05 wrote:
I am assuming you have a HWH auto level system. If so it dumps the air before it starts to level. Quick way to see is store the level and build pressure and then have someone outside and level the system. Air should be dump if not then the level system should not work.

I assume the OP, when he talks of draining tanks, is wanting to be sure there is no water in the tanks. If just want air out of system, just shut off engine and pump foot value.
OP, the auto drains on my old Pete had a wire, for a small heating element, but the drain seamed to be controlled by time or pressure. With them and a well serviced air dryer, there should be no water in tank. Every fall I would pump air down and pull plugs to see if I had any water.

Yes it dumps the air before it starts to level. I hadn’t thought of that. Those things I’m looking at must have something to do with that. So if they are some sort of electric air dump valves then I suppose I don’t ever have to worry about draining the water out as long as I use the automatic leveling system once in a while. Does that sound right?

[JRscooby]

MountainAir05 wrote:
I am assuming you have a HWH auto level system. If so it dumps the air before it starts to level. Quick way to see is store the level and build pressure and then have someone outside and level the system. Air should be dump if not then the level system should not work.

I assume the OP, when he talks of draining tanks, is wanting to be sure there is no water in the tanks. If just want air out of system, just shut off engine and pump foot value.
OP, the auto drains on my old Pete had a wire, for a small heating element, but the drain seamed to be controlled by time or pressure. With them and a well serviced air dryer, there should be no water in tank. Every fall I would pump air down and pull plugs to see if I had any water.

[craig7h]

Cindy and Steve

It would be very helpful if you would have told us what unit you have. Like make model year that kind of thing.

Also you have the availability to put that information in the signature block.

[MountainAir05]

Cindy and Steve wrote:

chuckftboy wrote:
Look a little closer. My lanyards were ty-wrapped to my frame and I had to cut the ty-wraps and stretch them out through the frame. That's probably how mine left freightliner and neither Winnebago or General RV took the time to do a very good PDI.

I layed right under the tanks and stared at them. There are no lanyards and no drain valves to open.

Does it have one or two wires coming out of it.

[MountainAir05]

I am assuming you have a HWH auto level system. If so it dumps the air before it starts to level. Quick way to see is store the level and build pressure and then have someone outside and level the system. Air should be dump if not then the level system should not work.

[donkeydew]

google 12 volt air dump valves and you will probably find the one you are looking at on your tanks

[Cindy_and_Steve]

chuckftboy wrote:
Look a little closer. My lanyards were ty-wrapped to my frame and I had to cut the ty-wraps and stretch them out through the frame. That's probably how mine left freightliner and neither Winnebago or General RV took the time to do a very good PDI.

I layed right under the tanks and stared at them. There are no lanyards and no drain valves to open.

[chuckftboy]

Look a little closer. My lanyards were ty-wrapped to my frame and I had to cut the ty-wraps and stretch them out through the frame. That's probably how mine left freightliner and neither Winnebago or General RV took the time to do a very good PDI.