A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 2925-01-239-6044
NSN 5915-01-556-9188
NSN 5930-00-644-9537
NSN 5960-01-487-6436
NSN 5945-01-474-4335
NSN 5960-01-573-6483
NSN 5990-01-548-3711
NSN 2925-01-111-2927
NSN 5905-01-586-5320
NSN 5960-01-399-4327
NSN 5910-01-604-9958
NSN 6220-00-027-5303