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 6240-00-503-3506
NSN 6240-01-368-3280
NSN 6320-01-093-5738
NSN 5925-00-353-0612
NSN 5998-01-274-6040
NSN 6135-00-444-1402
NSN 6145-00-802-2059
NSN 5910-01-144-9829
NSN 5975-00-401-5365
NSN 2925-01-077-6867
NSN 5920-01-119-4363
NSN 5950-01-535-0099