what are these compressor items?

[396foxRN]

Bought this at a state auction. Had been sitting unused for 'about a decade', in the corner of a warehouse after being removed from its original facility. So, it wasnt hooked up to anything to know how some of the hose routing goes. Basically, what is the large black round part on the far left? And, what is the small electrical/pressure part with the red label on the far right? closeups show the particular items. Not sure what they are or what they do.

Bought it out of state on an online auction cause I thought it was a twin to my 340 model. Looks nearly identical, other than it doesnt have an intercooler between the pump and pulley. It's a 244-23, and physically nearly identical to my 340 in size and measurements, but is single stage/both pistons the same size (4x3.5). Was a bit disappointed it wasnt another old 340, but I got a truckload of other stuff too for a steal, and am quite happy. If I only knew what those two parts were and what they did....


Thanks, guys!

Doug

 

[Ole Slewfoot]

Overpressure safety valve and truck air dryer?

 

[blaker]

ad9 dryer yes truck
my guess

 

[396foxRN]

As in, someone used this to operate commercial vehicle air brakes.....or that someone used an air dryer meant for trucks on this compressor?

 

[blaker]

that I don't know look up ad9 dryer don't know why you would put one on a compressor

 

[atomicpunk]

Looks like an AD9 air dryer like said above. I'm guessing the 3rd pic is part of the system they used to get the dryer to purge?

Bendix AD9 manual - https://www.manualslib.com/manual/392581/Bendix-Ad-9-Air-Dryer.html