There is no float on a 440 most likely a Model 445 which float not available. However if the brass and float is ok the rubber stopper is available for it. If you need the whole thing i have retro fit a valve just do a goggle search for RH2010 float . it will work. you can even screw the 445 float to this one and make a few bends to make it fit. I think the threaded pipe fitting is a little shorter so you have to modify the housing a little. Been some time since i did it but i remember it does work out.
If it is a 440 then the water just runs when ever the umistat calls for humidification and the water just goes down three drain tube.If it is a 440 then the water just runs when ever the umistat calls for humidification and the water just goes down three drain tube.
Answers & Comments
There is no float on a 440 most likely a Model 445 which float not available. However if the brass and float is ok the rubber stopper is available for it. If you need the whole thing i have retro fit a valve just do a goggle search for RH2010 float . it will work. you can even screw the 445 float to this one and make a few bends to make it fit. I think the threaded pipe fitting is a little shorter so you have to modify the housing a little. Been some time since i did it but i remember it does work out.
If it is a 440 then the water just runs when ever the umistat calls for humidification and the water just goes down three drain tube.
Here is a link for parts to your humidifier http://www.aprilaireparts.com/aprilaire-440-humidifier-parts.html