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 6645-01-554-9772
NSN 5925-01-451-3584
NSN 5895-00-228-6482
NSN 6150-01-400-1297
NSN 5895-01-449-1371
NSN 6320-01-089-9086
NSN 5945-01-391-7993
NSN 5985-01-125-1941
NSN 7035-00-849-5526
NSN 5930-00-427-5235
NSN 5985-01-634-0635
NSN 6135-00-763-5793