Aluminum 4 inch dust cap. Goes on coupler. Emco wheaton valves for bottom loading and unloading
NSN 6645-01-660-1446
NSN 6320-00-894-1644
NSN 6320-01-113-7647
NSN 6645-00-262-7448
NSN 5895-01-014-2883
NSN 6610-00-984-6528
NSN 6220-01-371-1791
NSN 7035-01-056-5350
NSN 6610-00-393-0510
NSN 4140-01-582-2951
NSN 2925-01-041-8201
NSN 6650-01-189-0975