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 6645-01-285-9431
NSN 6685-01-029-3773
NSN 6645-01-033-5051
NSN 6645-01-559-3008
NSN 5910-01-472-7089
NSN 6685-00-334-0621
NSN 5950-01-399-5421
NSN 6150-01-462-4771
NSN 5985-01-220-8932
NSN 6145-01-077-8960
NSN 6150-01-143-7341
NSN 5855-01-100-3272