New Aro Solenoid Valve Bodies? or Something; NW0,8, NW 0,8, 10 BAR 10BAR, Part Number Unknown.  Each bid quantity is for a Lot of Two (2) Pieces.  You may bid / buy any number of lots, up to the total quantity available above.

These were acquired at a salvage freight sale recently, and we do not know much else about them.  They were brand new in a bulk plastic bag with no labels.  We packaged them in heavy Ziplok bags for resale.

These things are probably expensive if you know what they are.  Best we can conjecture, they possibly mount on an Aro valve body or manifold.  There is an outer and inner o-ring on the underside.  Presumably, a solenoid coil slides over the stem, and operates the internal plunger? when energized.    The little red screwdriver knob on the side is interesting.  When it is turned to the "0" position, you can blow air through the stem.  When it is turned to the "1" position, the stem is sealed.  Not sure if that changes them from "normally Open" to "normally Closed" or what.  We're guessing that the "10 bar" marking refers to pressure, which equates to about 145 PSI.

According to the calipers

Overall length:  1.825" / 46.35mm

Stem length:  1.248" / 31.71mm

Stem diameter (brass part):  .282" / 7.17mm

Stem threads:  Metric M6 x 0.5

Body length:  .859" / 21.83mm

Body width:  .632" / 16.05mm

Body height:  .577" / 14.65mm

Mounting holes:  .134" / 3.40mm diameter, spaced .743" / 18.87mm OC (on centers)