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 2925-00-288-1394
NSN 4140-00-882-2233
NSN 6150-00-131-2869
NSN 6620-01-128-4462
NSN 6135-01-435-5558
NSN 5985-00-185-2832
NSN 5920-01-614-7777
NSN 5990-01-468-1292
NSN 5855-01-100-3272
NSN 7035-01-555-8289
NSN 5998-01-158-8260
NSN 5950-00-858-0492