Aluminum 4 inch dust cap. Goes on coupler. Emco wheaton valves for bottom loading and unloading
NSN 6645-01-461-9250
NSN 5935-01-386-3118
NSN 5990-01-459-5482
NSN 2925-01-556-0333
NSN 5930-01-509-6318
NSN 6320-00-857-4073
NSN 6150-00-899-0740
NSN 2925-01-360-3575
NSN 6685-00-081-6212
NSN 6620-01-151-0620
NSN 5965-00-823-8623
NSN 7035-01-508-2541