1622175580 OEM Unloader Plunger Valve Assembly
The 1622175580 unloader assembly includes the bottom plunger. This sits on the bottom portion of the inlet valve assembly and has the rod going through the bottom. This is an OEM part from Chicago Pneumatic and was used on several versions of their CPBG35, CPBG40 and CPBG50 rotary screw air compressors. This was also a common part on several Atlas Copco and Quincy air compressors.