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 6150-01-538-0993
NSN 5935-00-999-2422
NSN 6685-01-157-1288
NSN 5835-00-427-2772
NSN 6645-01-244-4881
NSN 6320-01-029-4220
NSN 5915-01-152-5060
NSN 5930-00-440-2576
NSN 5990-01-280-0321
NSN 6105-00-262-2224
NSN 5910-01-649-1475
NSN 6610-01-185-5832