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 6685-01-103-4599
NSN 7035-01-528-9042
NSN 5999-01-133-4807
NSN 5950-00-706-9503
NSN 5985-00-548-0167
NSN 6645-00-927-1444
NSN 5985-01-160-7140
NSN 5985-01-364-6294
NSN 5996-00-630-9594
NSN 5998-00-985-4372
NSN 6130-01-620-3013
NSN 6620-01-484-6904