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 5930-00-104-2749
NSN 5975-01-293-7802
NSN 4140-01-262-7226
NSN 7035-01-623-8872
NSN 6130-00-343-1660
NSN 6135-01-350-1715
NSN 6320-01-170-4068
NSN 6620-01-435-8672
NSN 5835-01-480-9215
NSN 6685-01-205-1502
NSN 5855-00-821-7512
NSN 5996-01-580-0582