Summary Information (click on this NSN number for detailed information: 4820-00-001-6181)
Valve Piston, also referenced with federal logistics item name code 36944:
A cylindrical item of various configurations which reciprocates in a valve body, assisting in the movement of the disk to open or close a valve. may include additional components such as ring(s), collar(s), spring(s) and the like. excludes disk, valve.