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 5998-01-365-7198
NSN 6645-01-136-4447
NSN 5915-00-915-5733
NSN 5945-00-652-6846
NSN 5905-00-624-9565
NSN 6135-01-119-0720
NSN 5910-01-031-6476
NSN 5905-01-241-9828
NSN 5915-01-150-1658
NSN 5985-01-421-5852
NSN 7035-01-505-5979
NSN 6685-01-185-7699